If you don't need it, don't enable it:
The new Radeon Anti-Lag feature in Radeon Software is designed to help reduce input lag in GPU-limited cases. Radeon Anti-Lag controls the pace of the CPU work to make sure it doesn't get too far ahead of the GPU, reducing the amount of CPU work queued up. As a result, Radeon Anti-Lag can shrink input lag by almost a full frame, restoring the responsiveness to your game.
Radeon™ Anti-Lag – The Ultimate Tool for Professional Gamers - YouTube