Hearthstone · Bad session · 320 FPS · 54 stutters (123 slow frames including 25 freezes) · @Stimi

Shared session

By @Stimi

Hearthstone

Sep 23, 2026, 05:00 PM · 17 min · 14 min gameplay

Very erratic framerate (63% drop) — a serious cause to investigate.

Intel(R) Core(TM) i7-10700K CPU @ 3.80GHz · RTX 3080 FE · 31 GB RAM · 2560x1440 · driver 616.64Exclusive fullscreen

Detected by: system event · End: the game closed

Key takeaways

What stands out in this session

Bad session

Very erratic framerate (63% drop) — a serious cause to investigate.

54 stutters (123 slow frames including 25 freezes) · 15.8 s lost

Main cause: Game computation (110 occurrences). The worst stretch cost 5.4 s of lost frames.

CPU limited

The processor did most of the work on 99% of the frames: it is the limit, not the graphics card.

Performance

FPS, lows and stutter breakdown

Frame timing

14 min active / 17 min total

Average FPS

320

Session average

1% low

119

Average of the worst 1% of frames

0.1% low

Extreme micro-stutters

Frame p99

6.2 ms

Time per frame, in the slowest 1%

Time of each frame (ms) over the session — higher = longer frame. Red dots = frames that clearly break away from the pace of this session.

Slow frames (123)

15.8 s lost

Game computation110(14.3 s)

Not enough RAM10(1.4 s)

CPU taken over3(0.1 s)

System state

CPU, GPU, VRAM averages and temperatures

Game CPU

20%

GPU

19%

CPU temp max

62°

52° on average

GPU temp max

62°

58° 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 786 RPMGPU fan max 1,014 RPMCPU power avg. 87 WGPU power avg. 129 WHottest core #2 · 62 °C

CPU limited

The processor did most of the work on 99% of the frames: it is the limit, not the graphics card.

VRAM peak

2.1 GB

VRAM evictions

Input lag p99

10.8 ms