

If you do not have the issue while doing that, please do the following tests:

You can test if this problem is caused by a 3rd party application by adding -allow_third_party_software to your CS:GO launch options, and testing without the Anti-Cheat.

The AC will automatically start the game with -allow_third_party_software, so this means that any 3rd party overlays will work, while they would be blocked by default by the game if you don't use the AC. If you are running the FACEIT Client and enabled Highlights, please first try to disable them in the Highlight settings, restart the FACEIT Client and check if this solves the issue. If you are experiencing FPS drops or input lag in CS:GO while using the Anti-Cheat, this may be caused by another application which interacts with the game.
