How to identify a CPU or GPU bottleneck
Find which part is holding your frames back.
Open pageFrameReady guide
Why games stutter even at high FPS
You can see 140 FPS in the counter and still feel hitches. The average is only part of the story. What you feel is frame pacing, and a few slow frames can ruin a smooth-looking number.
Bottom line
Stutter at high FPS is usually poor frame pacing and low 1% lows, shader compilation on first play, a CPU or storage bottleneck, or background apps. Look at 1% lows and frame time, not just the average FPS.
Do not buy on a guess. Check your exact setup in 60 seconds and see the one part that matters.
Evidence status
inferred: FrameReady uses this label so predictions, official claims, and unknowns do not get mixed together.
Average FPS hides the problem
The average is smoothed over a second. A single frame that takes far too long still shows up as a hitch even when the average stays high.
- Watch 1% and 0.1% low FPS, not just the average.
- A big gap between average and 1% low means uneven frame pacing.
- Frame time graphs show spikes the average number hides.
Shader compilation and traversal stutter
Many modern games compile shaders as you play. New areas and effects can cause a brief hitch the first time they appear.
- First-run stutter often fades after a level has been seen once.
- Some games have a shader pre-compile step, let it finish.
- Traversal stutter appears when new areas stream in from storage.
CPU and storage bottlenecks
A GPU that pumps out frames still waits on the CPU and drive. When those cannot keep up, frames arrive unevenly.
- A CPU bottleneck causes stutter in busy scenes and crowds.
- A slow HDD can cause hitches as assets stream in.
- An SSD reduces streaming stutter in open-world games.
Settings and background load
A few settings and other software cause more stutter than raw graphics settings do.
- Cap FPS slightly below your monitor's refresh for steadier pacing.
- Turn off overlays and capture tools while testing.
- Update GPU drivers, then change one setting at a time.
Related next steps
Sources
- official: FrameReady browser benchmark. Measures your GPU in the browser and frames the score against game targets.
- official: How FrameReady works. FrameReady's own methodology for readiness scores, evidence labels, and where estimates stop.