Project Zomboid · Clean session · 85 FPS · 37 stutters (71 slow frames including 9 freezes) · @kleiN

Shared session

Project Zomboid

Oct 21, 2026, 06:06 PM · 1h 14min · 32 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

Smooth session

The time lost to stutters stays below the threshold.

37 stutters (71 slow frames including 9 freezes) · 7.1 s lost

Main cause: Game computation (67 occurrences). The worst stretch cost 1.7 s of lost frames.

Pace set by the processor

The processor set the pace on 79% of the frames: it decides how many frames per second you get, not the graphics card.

Performance

FPS, lows and stutter breakdown

Frame timing

32 min active / 74 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

21.5 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 (71)

7.1 s lost

Game computation67(6.4 s)

Drive loading3(0.1 s)

Graphics load1(1.7 s)

System state

CPU, GPU, VRAM averages and temperatures

Game CPU

17%

GPU

52%

CPU temp max

81°

65° on average

GPU temp max

64°

57° 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 1,270 RPMCPU power avg. 93 WGPU power avg. 169 W

Measurement conditions

V-Sync: off
Loading hitches excluded: 4
Measurement cost: 0.4% of the processor

Pace set by the processor

The processor set the pace on 79% of the frames: it decides how many frames per second you get, not the graphics card.

VRAM peak

13.2 GB

Input lag p99

55.8 ms