diff --git a/src/actors/fake_item_box/render.inc.c b/src/actors/fake_item_box/render.inc.c
index ac1621b4f..3292b64e2 100644
--- a/src/actors/fake_item_box/render.inc.c
+++ b/src/actors/fake_item_box/render.inc.c
@@ -26,7 +26,7 @@ void render_actor_fake_item_box(Camera* camera, struct FakeItemBox* fakeItemBox)
     f32 someMultiplier;
 
     // @port: Tag the transform.
-    FrameInterpolation_RecordOpenChild(TAG_ITEM_ADDR(fakeItemBox), 0);
+    FrameInterpolation_RecordOpenChild("Fake Item Box", TAG_ITEM_ADDR(fakeItemBox));
 
     if (is_within_render_distance(camera->pos, fakeItemBox->pos, camera->rot[1], 2500.0f, gCameraZoom[camera - camera1],
                                   1000000.0f) < 0 &&
diff --git a/src/actors/item_box/render.inc.c b/src/actors/item_box/render.inc.c
index 8d6bdea19..12cc17497 100644
--- a/src/actors/item_box/render.inc.c
+++ b/src/actors/item_box/render.inc.c
@@ -28,7 +28,7 @@ void render_actor_item_box(Camera* camera, struct ItemBox* item_box) {
     f32 someMultiplier;
 
     // @port: Tag the transform.
-    FrameInterpolation_RecordOpenChild(TAG_ITEM_ADDR(item_box), 0);
+    FrameInterpolation_RecordOpenChild("ItemBox", TAG_ITEM_ADDR(item_box));
 
     temp_f0 = is_within_render_distance(camera->pos, item_box->pos, camera->rot[1], 0.0f, gCameraZoom[camera - camera1],
                                         4000000.0f);
diff --git a/src/engine/Matrix.cpp b/src/engine/Matrix.cpp
index 13f768ec2..e46804ad5 100644
--- a/src/engine/Matrix.cpp
+++ b/src/engine/Matrix.cpp
@@ -13,7 +13,6 @@ void AddMatrix(std::vector<Mtx>& stack, Mat4 mtx, s32 flags) {
     // Push a new matrix to the stack
     stack.emplace_back();
 
-    FrameInterpolation_RecordMatrixMtxFToMtx((MtxF*)mtx, &stack.back());
     // Convert to a fixed-point matrix
     FrameInterpolation_RecordMatrixMtxFToMtx((MtxF*)mtx, &stack.back());
     guMtxF2L(mtx, &stack.back());
diff --git a/src/render_player.c b/src/render_player.c
index 9267706db..85c04f5b9 100644
--- a/src/render_player.c
+++ b/src/render_player.c
@@ -32,6 +32,7 @@
 #include <assets/donkeykong_kart.h>
 #include "port/Game.h"
 #include "engine/Matrix.h"
+#include "port/interpolation/FrameInterpolation.h"
 
 s8 gRenderingFramebufferByPlayer[] = { 0x00, 0x02, 0x00, 0x01, 0x00, 0x01, 0x00, 0x02 };
 
@@ -722,7 +723,7 @@ const char** wheelPtr[] = {
     donkeykong_kart_wheels, wario_kart_wheels, peach_kart_wheels, bowser_kart_wheels,
 };
 
-s32 D_800DDE74[] = { 96, 128, 192, 256, 288, 384, 512, 544, 576, 0, 0};
+s32 D_800DDE74[] = { 96, 128, 192, 256, 288, 384, 512, 544, 576, 0, 0 };
 
 void render_players_on_screen_two(void) {
     gPlayersToRenderCount = 0;
@@ -1616,9 +1617,6 @@ void render_kart(Player* player, s8 playerId, s8 screenId, s8 arg3) {
     s16 temp_v1;
     s16 thing;
 
-    FrameInterpolation_RecordMatrixPush(mtx);
-
-
     if (player->unk_044 & 0x2000) {
         sp14C[0] = 0;
         sp14C[1] = player->unk_048[screenId];
@@ -1674,6 +1672,9 @@ void render_kart(Player* player, s8 playerId, s8 screenId, s8 arg3) {
     mtxf_scale2(mtx, gCharacterSize[player->characterId] * player->size);
     // convert_to_fixed_point_matrix(&gGfxPool->mtxKart[playerId + (screenId * 8)], mtx);
 
+    // @port: Tag the transform.
+    FrameInterpolation_RecordOpenChild("Player", playerId | screenId << 8);
+
     if ((player->effects & BOO_EFFECT) == BOO_EFFECT) {
         if (screenId == playerId) {
             AddKartMatrix(mtx, G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
@@ -1747,7 +1748,8 @@ void render_kart(Player* player, s8 playerId, s8 screenId, s8 arg3) {
     gSPTexture(gDisplayListHead++, 1, 1, 0, G_TX_RENDERTILE, G_OFF);
     gDPSetAlphaCompare(gDisplayListHead++, G_AC_NONE);
 
-    FrameInterpolation_RecordMatrixPop(mtx);
+    // @port Pop the transform id.
+    FrameInterpolation_RecordCloseChild();
 }
 
 void render_ghost(Player* player, s8 playerId, s8 screenId, s8 arg3) {