What Are Frametime Spikes? Why High FPS Still Stutters (Complete Guide)
If your game shows 100-144+ FPS but still stutters, hitches, or feels choppy, you have frametime spikes, not a performance problem. Frametime measures how long each individual frame takes to render. When one frame takes 50ms instead of 16ms, you get visible stuttering even though your average FPS stays high. This guide explains what frametime spikes are, what causes them, and how to fix high-FPS stuttering through 8 targeted solutions covering GPU saturation, CPU bottlenecks, shader compilation, thermal throttling, storage issues, overlays, and driver problems.