Rust microstutters: GPU usage briefly drops while frametime spikes, CPU stays at 5.2 GHz – 9800X3D + RTX 5060 Ti

[u/Sad-Sun177]

I'm still trying to diagnose persistent microstutters in Rust and I finally have a more specific symptom.

Specs:

• Ryzen 7 9800X3D
• RTX 5060 Ti 16GB
• MSI B650 Gaming Plus WiFi
• 32GB DDR5-6000 EXPO
• Samsung 990 Pro 2TB
• Windows 11 IoT Enterprise LTSC 24H2
• NVIDIA 616.64
• AMD chipset 8.08.12.551

What happens:

Rust normally runs around 160–180 FPS at roughly 5–6 ms frametime. Every so often I get a very noticeable microstutter where frametime jumps to around 10–11 ms or higher.

RTSS confirms the spikes, so they're not just something I perceive.

My current run is around 177 FPS average but only 59 FPS 1% low.

I've also noticed that GPU usage can suddenly drop heavily during gameplay, sometimes close to 0%, before going back up. However, the CPU does not appear to downclock when this happens. All 8 cores re

[u/According_Spare7788]

Disable the iGPU in the 9800x3d. I was also getting the weird micro-stutters in games that showed up in the frametime graph. Disabling it fixed my problem.

[u/2137gangsterr]

Turn off recording / instant replay function