diff --git a/include/d/actor/d_a_horse.h b/include/d/actor/d_a_horse.h
index 37e4bac70f..7e8ef8c343 100644
--- a/include/d/actor/d_a_horse.h
+++ b/include/d/actor/d_a_horse.h
@@ -196,6 +196,9 @@ public:
     void copyReinPos();
     void setReinPosHandSubstance(int);
     void setReinPosNormalSubstance();
+#if TARGET_PC
+    void lerpControlPoints(f32 alpha);
+#endif
     void bgCheck();
     bool checkSpecialWallHitSubstance(cXyz const&) const;
     void setServiceWaitTimer();
diff --git a/include/d/d_drawlist.h b/include/d/d_drawlist.h
index 80dc9035df..9eecac2d61 100644
--- a/include/d/d_drawlist.h
+++ b/include/d/d_drawlist.h
@@ -435,6 +435,10 @@ public:
         m3DLineMatSortPacket[param_1->getMaterialID()].setMatDark(param_1);
     }
 
+#if TARGET_PC
+    void refresh3DlineMats(const cXyz& eye);
+#endif
+
     void peekZdata() { mPeekZ.peekData(); }
     void entryZSortListZxlu(J3DPacket* i_packet, cXyz& param_1) {
         entryZSortXluDrawList(mDrawBuffers[DB_LIST_Z_XLU], i_packet, param_1);
diff --git a/include/dusk/frame_interpolation.h b/include/dusk/frame_interpolation.h
index 3dfa00d53b..98495d18db 100644
--- a/include/dusk/frame_interpolation.h
+++ b/include/dusk/frame_interpolation.h
@@ -6,6 +6,8 @@
 #include <stddef.h>
 #include <stdint.h>
 
+struct cXyz;
+
 #ifdef __cplusplus
 namespace dusk {
 namespace frame_interp {
@@ -15,6 +17,7 @@ void ensure_initialized();
 void begin_record();
 void end_record();
 void interpolate(float step);
+float get_interpolation_step();
 void notify_sim_tick_complete();
 uint32_t begin_presentation_ui_pass();
 uint32_t get_presentation_ui_advance_ticks();
@@ -27,6 +30,8 @@ void record_final_mtx_raw(const Mtx* dest, const Mtx src);
 bool lookup_replacement(const void* source, Mtx out);
 bool lookup_concat_replacement(const void* lhs, const void* rhs, Mtx out);
 
+void camera_eye_from_view_mtx(MtxP view_mtx, cXyz* o_eye);
+
 }  // namespace frame_interp
 }  // namespace dusk
 #endif
diff --git a/include/m_Do/m_Do_ext.h b/include/m_Do/m_Do_ext.h
index e6973dc782..77d046f0de 100644
--- a/include/m_Do/m_Do_ext.h
+++ b/include/m_Do/m_Do_ext.h
@@ -541,6 +541,9 @@ public:
     virtual int getMaterialID() = 0;
     virtual void setMaterial() = 0;
     virtual void draw() = 0;
+#if TARGET_PC
+    virtual void refreshGeometryForPresentationEye(const cXyz& eye) {}
+#endif
 
     /* 0x4 */ mDoExt_3DlineMat_c* field_0x4;
 };
@@ -582,11 +585,19 @@ class dKy_tevstr_c;
 class mDoExt_3DlineMat1_c : public mDoExt_3DlineMat_c {
 public:
     int init(u16, u16, ResTIMG*, int);
+#if TARGET_PC
+    void update(int, GXColor&, dKy_tevstr_c*, const cXyz* presentationEye = nullptr);
+    void update(int, f32, GXColor&, u16, dKy_tevstr_c*, const cXyz* presentationEye = nullptr);
+#else
     void update(int, GXColor&, dKy_tevstr_c*);
     void update(int, f32, GXColor&, u16, dKy_tevstr_c*);
+#endif
     int getMaterialID() { return 1; }
     void setMaterial();
     void draw();
+#if TARGET_PC
+    void refreshGeometryForPresentationEye(const cXyz& eye) override;
+#endif
 
     cXyz* getPos(int i_idx) { return mpLines[i_idx].field_0x0; }
     f32* getSize(int i_idx) { return mpLines[i_idx].field_0x4; }
@@ -600,6 +611,11 @@ private:
     /* 0x34 */ u16 field_0x34;
     /* 0x36 */ u8 mIsDrawn;
     /* 0x38 */ mDoExt_3Dline_c* mpLines;
+#if TARGET_PC
+    u8 mInterpLineKind;
+    f32 mInterpLineF;
+    u16 mInterpLineU16;
+#endif
 };
 
 class mDoExt_3DlineMat2_c : public mDoExt_3DlineMat1_c {
@@ -616,6 +632,9 @@ public:
     void setMatDark(mDoExt_3DlineMat_c* i_mat) { setMat(i_mat); }
 
     void setMat(mDoExt_3DlineMat_c*);
+#if TARGET_PC
+    mDoExt_3DlineMat_c* getFirstMat() const { return mp3DlineMat; }
+#endif
     virtual void draw();
     virtual ~mDoExt_3DlineMatSortPacket() {}
 
diff --git a/src/d/actor/d_a_horse.cpp b/src/d/actor/d_a_horse.cpp
index 976e398616..68112eba47 100644
--- a/src/d/actor/d_a_horse.cpp
+++ b/src/d/actor/d_a_horse.cpp
@@ -20,6 +20,21 @@
 #include <cmath>
 #include <cstring>
 
+#if TARGET_PC
+#include "dusk/dusk.h"
+
+namespace {
+// FRAME INTERP NOTE: Sim tick control point snapshots for interpolation
+constexpr int kHorseReinSimMax = 75;
+cXyz s_horseReinSimPrev[kHorseReinSimMax];
+cXyz s_horseReinSimCurr[kHorseReinSimMax];
+int s_horseReinSimNumPrev;
+int s_horseReinSimNumCurr;
+bool s_horseReinSimPrevValid;
+bool s_horseReinSimCurrValid;
+}  // namespace
+#endif
+
 #define ANM_HS_BACK_WALK           6
 #define ANM_HS_WALK_START          7
 #define ANM_HS_EXCITEMENT          8
@@ -3016,6 +3031,20 @@ void daHorse_c::copyReinPos() {
     for (i = rein->field_0x8[0] - 1; i >= 0; i--, pos_p++) {
         *pos_p = rein->field_0x0[0][i];
     }
+#if TARGET_PC
+    if (field_0x1204 > 0) {
+        if (s_horseReinSimCurrValid && s_horseReinSimNumCurr > 0) {
+            memcpy(s_horseReinSimPrev, s_horseReinSimCurr, s_horseReinSimNumCurr * sizeof(cXyz));
+            s_horseReinSimNumPrev = s_horseReinSimNumCurr;
+            s_horseReinSimPrevValid = true;
+        }
+        memcpy(s_horseReinSimCurr, m_reinLine.getPos(0), field_0x1204 * sizeof(cXyz));
+        s_horseReinSimNumCurr = field_0x1204;
+        s_horseReinSimCurrValid = true;
+    } else {
+        s_horseReinSimCurrValid = false;
+    }
+#endif
 }
 
 void daHorse_c::setReinPosHandSubstance(int param_0) {
@@ -3127,6 +3156,30 @@ void daHorse_c::setReinPosNormalSubstance() {
     copyReinPos();
 }
 
+#if TARGET_PC
+void daHorse_c::lerpControlPoints(f32 alpha) {
+    // FRAME INTERP NOTE: Currently only lerping points for Epona's reins. Need a more global solution.
+    if (!dusk::getSettings().game.enableFrameInterpolation || !s_horseReinSimPrevValid || !s_horseReinSimCurrValid) {
+        return;
+    }
+    const int nCurr = s_horseReinSimNumCurr;
+    const int nPrev = s_horseReinSimNumPrev;
+    if (nCurr <= 0) {
+        return;
+    }
+    int n = nPrev < nCurr ? nPrev : nCurr;
+    if (n <= 0 || n > kHorseReinSimMax) {
+        return;
+    }
+    cXyz* dst = m_reinLine.getPos(0);
+    for (int i = 0; i < n; i++) {
+        const cXyz& p0 = s_horseReinSimPrev[i];
+        const cXyz& p1 = s_horseReinSimCurr[i];
+        dst[i] = p0 + (p1 - p0) * alpha;
+    }
+}
+#endif
+
 void daHorse_c::bgCheck() {
     if (m_procID != PROC_LARGE_DAMAGE_e) {
         static cXyz localCenterPos(0.0f, 100.0f, 0.0f);
diff --git a/src/d/d_drawlist.cpp b/src/d/d_drawlist.cpp
index f5dd0f23f5..9f2255b884 100644
--- a/src/d/d_drawlist.cpp
+++ b/src/d/d_drawlist.cpp
@@ -2017,3 +2017,13 @@ void dDlst_list_c::calcWipe() {
         dComIfGd_set2DXlu(&mWipeDlst);
     }
 }
+
+#if TARGET_PC
+void dDlst_list_c::refresh3DlineMats(const cXyz& eye) {
+    for (int i = 0; i < 3; i++) {
+        for (mDoExt_3DlineMat_c* mat = m3DLineMatSortPacket[i].getFirstMat(); mat != NULL; mat = mat->field_0x4) {
+            mat->refreshGeometryForPresentationEye(eye);
+        }
+    }
+}
+#endif
diff --git a/src/dusk/frame_interpolation.cpp b/src/dusk/frame_interpolation.cpp
index a3777dea7e..0c21b2b5af 100644
--- a/src/dusk/frame_interpolation.cpp
+++ b/src/dusk/frame_interpolation.cpp
@@ -300,6 +300,10 @@ void interpolate(float step) {
     interpolate_branch(g_previous_recording.root, g_current_recording.root, g_step);
 }
 
+float get_interpolation_step() {
+    return g_step;
+}
+
 void notify_sim_tick_complete() {
     ensure_initialized();
     g_pending_presentation_ui_ticks++;
@@ -394,5 +398,12 @@ bool lookup_concat_replacement(const void* lhs, const void* rhs, Mtx out) {
     return true;
 }
 
+// TODO: Is there already a built-in function for this?
+void camera_eye_from_view_mtx(MtxP view_mtx, cXyz* o_eye) {
+    o_eye->x = -(view_mtx[0][0] * view_mtx[0][3] + view_mtx[1][0] * view_mtx[1][3] + view_mtx[2][0] * view_mtx[2][3]);
+    o_eye->y = -(view_mtx[0][1] * view_mtx[0][3] + view_mtx[1][1] * view_mtx[1][3] + view_mtx[2][1] * view_mtx[2][3]);
+    o_eye->z = -(view_mtx[0][2] * view_mtx[0][3] + view_mtx[1][2] * view_mtx[1][3] + view_mtx[2][2] * view_mtx[2][3]);
+}
+
 }  // namespace frame_interp
 }  // namespace dusk
diff --git a/src/m_Do/m_Do_ext.cpp b/src/m_Do/m_Do_ext.cpp
index 0593815b1d..577ada0837 100644
--- a/src/m_Do/m_Do_ext.cpp
+++ b/src/m_Do/m_Do_ext.cpp
@@ -2398,7 +2398,12 @@ void mDoExt_3DlineMat0_c::draw() {
         var_r28++;
     }
 
-    field_0x16 ^= (u8)1;
+#if TARGET_PC
+    if (!dusk::getSettings().game.enableFrameInterpolation)
+#endif
+    {
+        field_0x16 ^= (u8)1;
+    }
 }
 
 void mDoExt_3DlineMat0_c::update(int param_0, f32 param_1, GXColor& param_2, u16 param_3,
@@ -2648,6 +2653,9 @@ int mDoExt_3DlineMat1_c::init(u16 param_0, u16 param_1, ResTIMG* param_2, int pa
 
     field_0x4 = 0;
     mIsDrawn = 0;
+#if TARGET_PC
+    mInterpLineKind = 0;
+#endif
 
     GXInitTexObj(&mTextureObject, (void*)((intptr_t)param_2 + param_2->imageOffset), param_2->width,
                  param_2->height, (GXTexFmt)param_2->format, (GXTexWrapMode)param_2->wrapS,
@@ -2720,11 +2728,19 @@ void mDoExt_3DlineMat1_c::draw() {
         lines++;
     }
     GXSetTexCoordScaleManually(GX_TEXCOORD0, 0, 0, 0);
-    mIsDrawn ^= (u8)1;
+#if TARGET_PC
+    if (!dusk::getSettings().game.enableFrameInterpolation)
+#endif
+    {
+        mIsDrawn ^= (u8)1;
+    }
 }
 
-void mDoExt_3DlineMat1_c::update(int param_0, f32 param_1, GXColor& param_2, u16 param_3,
-                                     dKy_tevstr_c* param_4) {
+#if TARGET_PC
+void mDoExt_3DlineMat1_c::update(int param_0, f32 param_1, GXColor& param_2, u16 param_3, dKy_tevstr_c* param_4, const cXyz* presentationEye) {
+#else
+void mDoExt_3DlineMat1_c::update(int param_0, f32 param_1, GXColor& param_2, u16 param_3, dKy_tevstr_c* param_4) {
+#endif
     mColor = param_2;
     this->mpTevStr = param_4;
     if (param_0 < 0) {
@@ -2734,6 +2750,13 @@ void mDoExt_3DlineMat1_c::update(int param_0, f32 param_1, GXColor& param_2, u16
     } else {
         field_0x34 = param_0;
     }
+
+#if TARGET_PC
+    mInterpLineKind = 1;
+    mInterpLineF = param_1;
+    mInterpLineU16 = param_3;
+#endif
+
     view_class* sp_3c = dComIfGd_getView();
     mDoExt_3Dline_c* sp_38 = mpLines;
     f32 local_f27 = param_3 != 0 ? param_1 / param_3 : 0.0f;
@@ -2787,7 +2810,12 @@ void mDoExt_3DlineMat1_c::update(int param_0, f32 param_1, GXColor& param_2, u16
             local_f31 += local_f30 * 0.02f * (8.0f / param_1);
         }
 
+#if TARGET_PC
+        const cXyz& lineEye = (presentationEye != nullptr && dusk::getSettings().game.enableFrameInterpolation) ? *presentationEye : sp_3c->lookat.eye;
+        sp_13c = *local_r27 - lineEye;
+#else
         sp_13c = *local_r27 - sp_3c->lookat.eye;
+#endif
         sp_130 = sp_130.outprod(sp_13c);
         sp_130.normalizeZP();
 
@@ -2822,7 +2850,11 @@ void mDoExt_3DlineMat1_c::update(int param_0, f32 param_1, GXColor& param_2, u16
                 local_f31 += local_f30 * 0.02f * (8.0f / param_1);
             }
 
+#if TARGET_PC
+            sp_13c = local_r27[0] - lineEye;
+#else
             sp_13c = local_r27[0] - sp_3c->lookat.eye;
+#endif
             sp_130 = sp_130.outprod(sp_13c);
             sp_130.normalizeZP();
 
@@ -2894,7 +2926,11 @@ void mDoExt_3DlineMat2_c::setMaterial() {
     GXLoadNrmMtxImm(cMtx_getIdentity(), 0);
 }
 
-void mDoExt_3DlineMat1_c::update(int param_0, GXColor& param_2, dKy_tevstr_c* param_4) {
+#if TARGET_PC
+void mDoExt_3DlineMat1_c::update(int param_0, GXColor& param_2, dKy_tevstr_c* param_4, const cXyz* presentationEye) {
+#else
+void mDoExt_3DlineMat1_c::update(int param_0, GXColor& param_2, dKy_tevstr_c* param_4
+#endif
     mColor = param_2;
     this->mpTevStr = param_4;
     if (param_0 < 0) {
@@ -2904,6 +2940,11 @@ void mDoExt_3DlineMat1_c::update(int param_0, GXColor& param_2, dKy_tevstr_c* pa
     } else {
         field_0x34 = param_0;
     }
+
+#if TARGET_PC
+    mInterpLineKind = 2;
+#endif
+
     view_class* stack_3c = dComIfGd_getView();
     mDoExt_3Dline_c* sp_38 = mpLines;
     f32 local_f30;
@@ -2929,6 +2970,12 @@ void mDoExt_3DlineMat1_c::update(int param_0, GXColor& param_2, dKy_tevstr_c* pa
     for (s32 sp_14 = 0; sp_14 < mNumLines; sp_14++) {
         local_r27 = sp_38[0].field_0x0;
         size_p = sp_38->field_0x4;
+#if TARGET_PC
+        if (presentationEye != nullptr && dusk::getSettings().game.enableFrameInterpolation && size_p == NULL) {
+            sp_38 += 1;
+            continue;
+        }
+#endif
         JUT_ASSERT(5875, size_p != NULL);
         sp_24 = sp_38->field_0x8[mIsDrawn];
         sp_28 = sp_24;
@@ -2942,7 +2989,12 @@ void mDoExt_3DlineMat1_c::update(int param_0, GXColor& param_2, dKy_tevstr_c* pa
         sp_130 = local_r27[1] - local_r27[0];
         local_f30 = sp_130.abs();
         local_f31 += local_f30 * 0.1f;
+#if TARGET_PC
+        const cXyz& lineEye = (presentationEye != nullptr && dusk::getSettings().game.enableFrameInterpolation) ? *presentationEye : stack_3c->lookat.eye;
+        sp_13c = local_r27[0] - lineEye;
+#else
         sp_13c = local_r27[0] - stack_3c->lookat.eye;
+#endif
         sp_130 = sp_130.outprod(sp_13c);
         sp_130.normalizeZP();
         local_r30->x = sp_130.x * 64.0f;
@@ -2964,7 +3016,11 @@ void mDoExt_3DlineMat1_c::update(int param_0, GXColor& param_2, dKy_tevstr_c* pa
             sp_130 = local_r27[1] - local_r27[0];
             local_f30 = sp_130.abs();
             local_f31 += local_f30 * 0.1f;
+#if TARGET_PC
+            sp_13c = local_r27[0] - lineEye;
+#else
             sp_13c = local_r27[0] - stack_3c->lookat.eye;
+#endif
             sp_130 = sp_130.outprod(sp_13c);
             sp_130.normalizeZP();
             local_r30 += 2;
@@ -3008,6 +3064,19 @@ void mDoExt_3DlineMat1_c::update(int param_0, GXColor& param_2, dKy_tevstr_c* pa
     }
 }
 
+#if TARGET_PC
+void mDoExt_3DlineMat1_c::refreshGeometryForPresentationEye(const cXyz& eye) {
+    if (!dusk::getSettings().game.enableFrameInterpolation) {
+        return;
+    }
+    if (mInterpLineKind == 1) {
+        update(field_0x34, mInterpLineF, mColor, mInterpLineU16, mpTevStr, &eye);
+    } else if (mInterpLineKind == 2) {
+        update(field_0x34, mColor, mpTevStr, &eye);
+    }
+}
+#endif
+
 void mDoExt_3DlineMatSortPacket::setMat(mDoExt_3DlineMat_c* i_3DlineMat) {
     if (mp3DlineMat == NULL) {
         dComIfGd_getListPacket()->entryImm(this, 0);
diff --git a/src/m_Do/m_Do_graphic.cpp b/src/m_Do/m_Do_graphic.cpp
index c27598989a..ff9e2042a0 100644
--- a/src/m_Do/m_Do_graphic.cpp
+++ b/src/m_Do/m_Do_graphic.cpp
@@ -51,6 +51,7 @@
 #endif
 
 #if TARGET_PC
+#include "d/actor/d_a_horse.h"
 #include "dusk/imgui/ImGuiConsole.hpp"
 #include "dusk/dusk.h"
 #endif
@@ -1952,6 +1953,18 @@ int mDoGph_Painter() {
                 GX_DEBUG_GROUP(dComIfGd_drawOpaListDark);
             }
 
+#if TARGET_PC
+            if (dusk::getSettings().game.enableFrameInterpolation) {
+                cXyz pres_eye;
+                dusk::frame_interp::camera_eye_from_view_mtx(j3dSys.getViewMtx(), &pres_eye);
+                // FRAME INTERP NOTE: Currently only recalculating points for Epona's reins. Need a more global solution.
+                if (daHorse_c* horse = dComIfGp_getHorseActor()) {
+                    horse->lerpControlPoints(dusk::frame_interp::get_interpolation_step());
+                }
+                g_dComIfG_gameInfo.drawlist.refresh3DlineMats(pres_eye);
+            }
+#endif
+
             GX_DEBUG_GROUP(dComIfGd_drawOpaListPacket);
             
             #if DEBUG