I've got a pretty solid setup with an RTX 5070 and an i5 10600k, accompanied by 48 GB of DDR4 RAM running at 3200MT/s, all on an MSI Z490-A PRO motherboard. Using two monitors, my main one runs at 2k@165Hz with G-Sync, and the second is 1080p@144Hz (though it's limited to 60Hz in software). Despite my GPU hardly maxing out (never above 60% usage), I'm facing serious frame stability problems. I can hit a decent average FPS, but the 1% low FPS numbers are a concern—especially since I used to have smoother performance with a 3060 on similar settings. While I realize my CPU is bottlenecking to some extent, it never fully loads. I'm also aware that my motherboard's PCIe version isn't the latest, but could that really be the culprit of my issues when the 3060 managed it? Any thoughts on how I can improve stability?
3 Answers
It sounds like your i5 10600k might be a noticeable bottleneck. I've had a similar experience where my 10700k struggled with my 3080 at 1440p. Even if your GPU isn't maxed out, lower settings and high refresh rates can cause the CPU to hold it back. As for the PCIe, it shouldn’t be a huge factor unless you’re hitting the VRAM limit. You’ve got 12GB, so it shouldn’t be an issue at 1440p. Upgrading to something like a 7500F or 7600 could help get more out of your GPU. Just keep in mind that even top-tier CPUs can struggle with poorly optimized games these days, like those built on Unreal Engine 5.
First off, make sure your RAM is set up correctly. Poor memory combinations can cause instability—if you’re using mismatched DIMMs, that can be problematic. Also, check that RAM XMP profiles are enabled for better performance. And just a heads-up: 3200cl22 RAM isn't the best; the lower the CL (CAS Latency), the better. So, if you’re not running cl16 or lower, that could be a factor. Understanding these specs can really help with performance.
You might want to check for a CPU bottleneck by using tools like Intel PresentMon. If the GPU's often in wait mode, that's a sign. Your setup does seem likely to have a CPU bottleneck, especially with features like DLSS enabled since they lower your rendering resolution. For the stability issues you're having, it’s tricky, but optimization in games can play a big role. Don't hesitate to test things like frame rates to see how your system reacts!
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