diff --git a/r5dev/engine/sys_dll2.cpp b/r5dev/engine/sys_dll2.cpp
index a878d759..0a8317c2 100644
--- a/r5dev/engine/sys_dll2.cpp
+++ b/r5dev/engine/sys_dll2.cpp
@@ -17,6 +17,7 @@
 #include "engine/traceinit.h"
 #ifndef DEDICATED
 #include "engine/sys_mainwind.h"
+#include "materialsystem/cmaterialsystem.h"
 #include "windows/id3dx.h"
 #include "client/vengineclient_impl.h"
 #include "geforce/reflex.h"
@@ -183,32 +184,40 @@ bool CEngineAPI::MainLoop()
         }
 
 #ifndef DEDICATED
-        if (GFX_HasPendingLowLatencyParameterUpdates())
+        const MaterialAdapterInfo_t& adapterInfo = g_pMaterialAdapterMgr->GetAdapterInfo();
+
+        // Only run on NVIDIA display drivers; AMD and Intel are not
+        // supported by NVIDIA Reflex.
+        if (adapterInfo.m_VendorID == NVIDIA_VENDOR_ID)
         {
-            const bool bUseLowLatencyMode = gfx_nvnUseLowLatency->GetBool();
-            const bool bUseLowLatencyBoost = gfx_nvnUseLowLatencyBoost->GetBool();
-
-            float fpsMax = fps_max_gfx->GetFloat();
-
-            if (fpsMax == -1.0f)
+            if (GFX_HasPendingLowLatencyParameterUpdates())
             {
-                const float globalFps = fps_max->GetFloat();
+                const bool bUseLowLatencyMode = gfx_nvnUseLowLatency->GetBool();
+                const bool bUseLowLatencyBoost = gfx_nvnUseLowLatencyBoost->GetBool();
 
-                // Make sure the global fps limiter is 'unlimited'
-                // before we let the gfx frame limiter cap it to
-                // the desktop's refresh rate; not adhering to
-                // this will result in a major performance drop.
-                if (globalFps == 0.0f)
-                    fpsMax = g_pGame->GetTVRefreshRate();
-                else
-                    fpsMax = 0.0f; // Don't let NVIDIA limit the frame rate.
+                float fpsMax = fps_max_gfx->GetFloat();
+
+                if (fpsMax == -1.0f)
+                {
+                    const float globalFps = fps_max->GetFloat();
+
+                    // Make sure the global fps limiter is 'unlimited'
+                    // before we let the gfx frame limiter cap it to
+                    // the desktop's refresh rate; not adhering to
+                    // this will result in a major performance drop.
+                    if (globalFps == 0.0f)
+                        fpsMax = g_pGame->GetTVRefreshRate();
+                    else
+                        fpsMax = 0.0f; // Don't let NVIDIA limit the frame rate.
+                }
+
+                GFX_UpdateLowLatencyParameters(D3D11Device(), bUseLowLatencyMode,
+                    bUseLowLatencyBoost, false, fpsMax);
             }
 
-            GFX_UpdateLowLatencyParameters(D3D11Device(), bUseLowLatencyMode,
-                bUseLowLatencyBoost, false, fpsMax);
+            GFX_RunLowLatencyFrame(D3D11Device());
         }
 
-        GFX_RunLowLatencyFrame(D3D11Device());
         CEngineAPI::PumpMessages();
 #endif // !DEDICATED