Project Zomboid · Bad session · 73 FPS · 277 stutters (2918 slow frames including 214 freezes) · @kleiN

Shared session

Project Zomboid

Oct 22, 2026, 07:07 PM · 4h 48min · 197 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.

277 stutters (2918 slow frames including 214 freezes) · 270.1 s lost

Main cause: Game computation. The worst stretch cost 30.7 s of lost frames.

Balanced

Neither one dominates (48% of the frames limited by the card, 52% by the processor).

Performance

FPS, lows and stutter breakdown

Frame timing

197 min active / 288 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

33.9 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 (2918)

270.1 s lost

Game computation449(69.3 s)

Graphics load25(1.3 s)

Drive loading18(1.4 s)

Not enough RAM8(1.0 s)

Breakdown of the first 500 stutters.

System state

CPU, GPU, VRAM averages and temperatures

Game CPU

19%

GPU

37%

CPU temp max

83°

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 53 °CCPU fan max 4,255 RPMGPU fan max 1,368 RPMCPU power avg. 95 WGPU power avg. 123 W

Measurement conditions

V-Sync: off
Loading hitches excluded: 74
Measurement cost: 1.3% of the processor

Balanced

Neither one dominates (48% of the frames limited by the card, 52% by the processor).

VRAM peak

14.0 GB

Input lag p99

103.1 ms