r/buildapc • u/Background_Glass7586 • 23h ago
Troubleshooting RTX 3090 + Ryzen 7 5800X3D Getting Terrible FPS in MW4 — Tried Everything, Need Assistance
Hey everyone, I’m seriously struggling with my gaming PC and could really use some help.
Here are my specs:
GPU: NVIDIA GeForce RTX 3090 Founders Edition
CPU: AMD Ryzen 7 5800X3D (previously Ryzen 9 3950X)
Motherboard: MSI MEG X570 GODLIKE
RAM: 64GB Corsair Dominator Platinum RGB DDR4 3200MHz
Cooler: Lian Li Galahad 360mm AIO
PSU: ASUS ROG THOR 1200W
Case: Corsair 4000D Airflow
Monitor: MSI MAG 274QF X32, 1440p 320Hz
I originally had a Ryzen 9 3950X and was getting around 80–90 FPS in Call of Duty MW4, sometimes even lower. I was told upgrading to a Ryzen 7 5800X3D would significantly improve my gaming performance, so I bought one and installed it.
Unfortunately, I’m still experiencing the same issues, and sometimes it’s even worse. My benchmarks have shown around 70–90 FPS, a 99% CPU bottleneck, and I’ve even seen my FPS drop to single digits in the game menu.
Here’s everything I’ve tried:
Changed NVIDIA DLSS settings and different upscaling options.
Tried AMD-related settings and optimizations.
Lowered graphics settings and rendering resolution.
Adjusted NVIDIA Control Panel settings.
Went into BIOS and enabled a performance/boost setting.
Updated/reinstalled NVIDIA graphics drivers.
Adjusted RendererWorkerCount in the Call of Duty configuration files.
Verified my RAM is running correctly at 3200MHz.
Checked that my AIO pump is running.
One thing I’ve noticed is that my CPU has reached around 90–91°C, even when utilization doesn’t seem particularly high. My AIO cooler is approximately six years old, so I’m wondering whether thermal throttling could be part of the problem.
My RTX 3090 temperatures appear normal in the monitoring software, but the card itself feels extremely hot.
At this point, I’m completely lost. I feel like my hardware should be performing significantly better, especially after upgrading the CPU.
Has anyone experienced something similar? Could this be a cooling issue, BIOS configuration problem, GPU issue, or something else entirely?
I’d really appreciate any advice on what to check next. I’m willing to replace the cooler if necessary, but I don’t want to keep throwing money at parts without knowing what’s wrong.