Project Zomboid · Bad session · 69 FPS · 62 stutters (595 slow frames including 114 freezes) · @kleiN

Shared session

Project Zomboid

Oct 21, 2026, 04:39 PM · 1h 26min · 19 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

Bad session

Stutters cost a noticeable share of the playtime.

62 stutters (595 slow frames including 114 freezes) · 72.4 s lost

Main cause: Game computation. The worst stretch cost 19.1 s of lost frames.

Pace set by the processor

The processor set the pace on 83% of the frames: it decides how many frames per second you get, not the graphics card.

Performance

FPS, lows and stutter breakdown

Frame timing

19 min active / 86 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

46.3 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 (595)

72.4 s lost

Game computation498(79.2 s)

Drive loading2(0.3 s)

Breakdown of the first 500 stutters.

System state

CPU, GPU, VRAM averages and temperatures

Game CPU

12%

GPU

23%

CPU temp max

81°

61° on average

GPU temp max

63°

54° 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 51 °CCPU fan max 4,240 RPMGPU fan max 1,249 RPMCPU power avg. 91 WGPU power avg. 61 W

Measurement conditions

V-Sync: off
Loading hitches excluded: 27
Measurement cost: 0.4% of the processor

Pace set by the processor

The processor set the pace on 83% of the frames: it decides how many frames per second you get, not the graphics card.

VRAM peak

13.2 GB

Input lag p99

145.8 ms