>>106349416
It's about pacing the GPU's render load, where it's never at 100% utilization (completely bottlenecked).
Larger FPS caps are advised to account for sudden spikes.
Just turn on Reflex in supported games.
Supposed FPS cap formula for reflex is
>Refresh - (Refresh x Refresh / 4096) = FPS Cap

>>106349432
FPS cap is about Reflex / Anti Lag, not FreeSync.
Not to mention, both FreeSync & Anti-Lag 2 have unresolved issues.