I recently upgraded my gaming PC's GPU from a 3060 Ti to a 4070 SUPER and changed my PSU to a Corsair CX750. Since making these upgrades, I've been experiencing significant stuttering in almost all my games. The stuttering patterns I've noticed include high CPU busy spikes (sometimes around 50ms), which leads to high GPU wait and time spikes, but no change in CPU wait or GPU busy. Importantly, these stutters only happen during movement—when I'm standing still, everything runs smoothly. I even monitored a 30-minute idle session in God of War 2018 with no stutters. I've thoroughly troubleshooted this issue: I've used DDU for driver updates, tried different versions, uninstalled software like MSI Afterburner, did a clean Windows reinstall, disabled G-Sync, HAGS, and ReBAR, and adjusted CPU thread affinities, but nothing has worked. I've ruled out shader compilation stutter, as the stutters persist even after revisiting areas multiple times. This issue occurs across various games, even lighter ones, and I've confirmed no disk usage spikes are correlated with the stutters. My specs include an i3 12100f, Zotac RTX 4070 SUPER, 16GB HyperX Fury RAM, MSI H610M-S motherboard, and the new Corsair CX750 PSU. I'm at my wit's end—could the stuttering relate to the CPU, or might there be an issue with the new GPU or PSU? It's been two weeks of gaming frustration, and I'm eager for any assistance!
3 Answers
The CPU could still be the culprit here. It doesn't have to be maxed out to bottleneck the GPU. Testing by limiting FPS to 50-60 can show whether the stutters are still happening. Give that a shot and let us know!
Make sure you're using the same graphic settings as before and locking your frames. If not, your CPU might be working harder than it needs to. Try capping to 60 FPS in those less demanding games and see if that clears things up. Remember, an i3 12100F isn't the most powerful chip out there, so it could struggle with high-demand setups!
It seems like those CPU busy spikes really point to a CPU bottleneck. If something is hogging single-threaded processes or memory, it could be causing delays. Have you checked for background applications that might be impacting performance?
I've been keeping it minimal during tests—just PresentMon running when I capture those spikes. I've also tried using some optimization tools to clear up unnecessary background processes.
Good point! I actually did run God of War 2018 on the same settings as before and locked at 90 FPS, but I’ll definitely try the 60 FPS limit to see if it makes a difference.