ac6_unlock_fps and vsync are set true and false respectively by default.

.vscode/launch.json

@@ -9,7 +9,13 @@
             "args": [
                 "C:\\Users\\Zalamander\\AC6Recomp\\assets",
                 "--enable_console=false",
-                "--log_level=info"
+                "--log_level=info",
+                "--d3d12_allow_variable_refresh_rate_and_tearing=true",
+                "--swap_post_effect=fxaa",
+                "--present_effect=bilinear",
+                "--present_fsr_quality_mode=fsr",
+                "--resolution=1440p",
+                "--fullscreen=true"
             ],
             "cwd": "${workspaceFolder}",
             "console": "integratedTerminal"

src/ac6recomp_app.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <rex/cvar.h>
+#include <rex/graphics/flags.h>
 #include <rex/rex_app.h>
 #include <rex/ui/overlay/debug_overlay.h>
 
@@ -21,6 +22,8 @@ class Ac6recompApp : public rex::ReXApp {
  protected:
   void OnPreSetup(rex::RuntimeConfig& config) override {
     REXCVAR_SET(vfetch_index_rounding_bias, true);
+    REXCVAR_SET(ac6_unlock_fps, true);
+    REXCVAR_SET(vsync, false);
   }
 
   void OnCreateDialogs(rex::ui::ImGuiDrawer* drawer) override {