Project Zomboid · Clean session · 90 FPS · 197 stutters (529 slow frames including 22 freezes) · @kleiN

Shared session

Project Zomboid

Oct 23, 2026, 11:01 PM · 59 min · 41 min gameplay

AMD Ryzen 7 9800X3D 8-Core Processor · MSI GeForce RTX 4080 Ventus 3X OC 16GB · 46 GB RAM · 2560x1440 · driver 621.01Exclusive fullscreen

Detected by: system event · End: the game closed

Key takeaways

Smooth session

The time lost to stutters stays below the threshold.

197 stutters (529 slow frames including 22 freezes) · 27.6 s lost

Main cause: Game computation. The worst stretch cost 912 ms of lost frames.

Pace set by the graphics card

The graphics card set the pace on 70% of the frames: the usual situation for an uncapped game.

Performance

FPS, lows and stutter breakdown

Frame timing

41 min active / 59 min total

Average FPS

Session average

1% low

Average of the worst 1% of frames

0.1% low

Average of the worst 0.1% of frames

Frame p99

29.4 ms

Time per frame, in the slowest 1%

Median frame time of each slice (ms) over the session. Red dots = slowest frame of a slice, when it clearly breaks from the session’s pace.

Slow frames (529)

27.6 s lost

Game computation499(35.8 s)

Drive loading1(0.2 s)

Breakdown of the first 500 stutters.

System state

CPU, GPU, VRAM averages and temperatures

Game CPU

23%

GPU

45%

CPU temp max

78°

65° on average

GPU temp max

66°

56° on average

Processor · Graphics card over the session, peak of each slice. The dashed lines are the thresholds of the thermal summary.

Advanced sensors (PawnIO driver)

VRM max 52 °CCPU fan max 4,240 RPMGPU fan max 1,451 RPMCPU power avg. 94 WGPU power avg. 143 W

Measurement conditions

V-Sync: off
Loading hitches excluded: 13
Measurement cost: 0.4% of the processor

Pace set by the graphics card

The graphics card set the pace on 70% of the frames: the usual situation for an uncapped game.

VRAM peak

13.3 GB

Input lag p99

48.2 ms