diff --git a/BunnymodXT/modules/ClientDLL.cpp b/BunnymodXT/modules/ClientDLL.cpp
index 9d6f42d5..003aca5d 100644
--- a/BunnymodXT/modules/ClientDLL.cpp
+++ b/BunnymodXT/modules/ClientDLL.cpp
@@ -1637,6 +1637,23 @@ HOOK_DEF_1(ClientDLL, void, __cdecl, HUD_Frame, double, time)
 		orig_forcehltv_found = HwDLL::GetInstance().ORIG_Cmd_FindCmd("dem_forcehltv");
 	}
 
+	#ifdef _WIN32
+	static bool check_vsync = true;
+	if (check_vsync)
+	{
+		bool bxtDisableVSync = getenv("BXT_DISABLE_VSYNC");
+		if (bxtDisableVSync)
+		{
+			typedef BOOL(APIENTRY* PFNWGLSWAPINTERVALPROC)(int);
+			PFNWGLSWAPINTERVALPROC wglSwapIntervalEXT = 0;
+			wglSwapIntervalEXT = (PFNWGLSWAPINTERVALPROC)wglGetProcAddress("wglSwapIntervalEXT");
+			if (wglSwapIntervalEXT)
+				wglSwapIntervalEXT(0);
+		}
+		check_vsync = false;
+	}
+	#endif
+
 	if (CVars::_bxt_taslog.GetBool() && pEngfuncs)
 		pEngfuncs->Con_Printf(const_cast<char*>("HUD_Frame time: %f\n"), time);
 
diff --git a/README.md b/README.md
index c873be78..b036e824 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,7 @@ Use the [Bunnymod XT Launcher](https://github.com/YaLTeR/bxt-launcher).
 - **SPTLIB_DEBUG** - if set to 1, logs all dlopen, dlclose and dlsym calls.
 - **BXT_DISABLE_DEBUG_CONSOLE** - if set, disables the Bunnymod XT debug console.
 - **BXT_DISABLE_DISCORD_RPC** - if set, disables the Discord RPC module.
+- **BXT_DISABLE_VSYNC** - if set, disables the V-Sync on initialization (Windows-only).
 
 ## Building