Project Zomboid · Rough session · 76 FPS · 316 stutters (969 slow frames including 32 freezes) · @kleiN

Shared session

Project Zomboid

Oct 21, 2026, 09:42 PM · 2h 47min · 109 min gameplay

AMD Ryzen 7 9800X3D 8-Core Processor · MSI GeForce RTX 4080 Ventus 3X OC 16GB · 46 GB RAM · 2560x1440 · driver 617.14Exclusive fullscreen

Detected by: system event · End: the game closed

Key takeaways

Rough session

Stutters cost a noticeable share of the playtime.

316 stutters (969 slow frames including 32 freezes) · 44.8 s lost

Main cause: Game computation. The worst stretch cost 6.0 s of lost frames.

Pace set by the processor

The processor set the pace on 69% of the frames: it decides how many frames per second you get, not the graphics card.

Performance

FPS, lows and stutter breakdown

Frame timing

109 min active / 167 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

28.1 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 (969)

44.8 s lost

Game computation481(25.7 s)

CPU taken over10(0.5 s)

Not enough RAM8(0.9 s)

Drive loading1(0.1 s)

Breakdown of the first 500 stutters.

System state

CPU, GPU, VRAM averages and temperatures

Game CPU

18%

GPU

39%

CPU temp max

81°

66° on average

GPU temp max

65°

55° 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 53 °CCPU fan max 4,240 RPMGPU fan max 1,504 RPMCPU power avg. 97 WGPU power avg. 124 W

Measurement conditions

V-Sync: off
Loading hitches excluded: 18
Measurement cost: 0.4% of the processor

Pace set by the processor

The processor set the pace on 69% of the frames: it decides how many frames per second you get, not the graphics card.

VRAM peak

13.9 GB

Input lag p99

50.2 ms