Frametime Variance &
1% Low FPS Stutter Index
Diagnose frame delivery consistency, calculate millisecond frametime variance spikes, and smooth out gameplay hitches.
๐ Benchmark Metrics (MSI Afterburner / CapFrameX)
Frequently Asked Questions
Why does my game feel laggy even with 144+ Average FPS?
Average FPS can mask severe micro-stuttering. If your Average is 144 FPS (6.94ms per frame) but your 1% Low FPS drops to 60 FPS (16.66ms per frame), that sudden 9.72ms frametime spike registers to your eyes as a jarring hitch or stutter.
What is the best way to stabilize 1% low frame times?
Cap your frame rate slightly below your monitor's refresh rate (e.g., cap at 141 FPS on a 144Hz monitor or 237 FPS on a 240Hz monitor) using RivaTuner Statistics Server (RTSS) or in-game frame rate limiters, and enable G-Sync/FreeSync combined with V-Sync in your GPU driver control panel.
What causes 0.1% Low FPS drops during competitive matches?
0.1% low drops are typically caused by CPU thermal throttling, Windows background processes (antivirus, browser tabs, Discord hardware acceleration), slow RAM subtimings, or assets loading from a slow hard drive.