Hi,

Note that rendering at 4K (3840 x 2160) places a heavy load on even the most powerful systems, particularly if you are using Lumen in Unreal Engine. Unreal Engine may not use most of the Threadripper 3960X CPU cores, as it is optimized more for gaming workloads rather than office tasks. While the Threadripper 3960X is intended for heavy office use, so make sure the AMD drivers or settings are configured for high-performance or gaming instead of office use.

It is also a good idea to run benchmarking software to compare your computer’s performance with systems that have similar hardware. This will help you confirm whether your system is operating at its expected speed.

Warmest regards,

Thank you for responding. I've having same issue with 1920x1080p HD resolution also. I've turned off all power management settings and I'm not using HyperThreading on the CPU. Pretty much checked the same stuff I've seen on other threads.

Regarding Threadripper - Is the suggestion that using the AMD Ryzen CPU is a better option? Is that the reason Aximmetry recommendations on the website doesn't include Threadripper. I was hesitant to use the Ryzen as it has less PCI lanes available. I believe the Ryzen 9 has 28 pci lanes (with correct motherboard). I guess with 1 GPU using 16 lanes and a BM 8k pro capture card using 8 lanes for a total of 24 used lanes, that that would be ok?

CPU thermo seems to well within norms from testing. I'm hesitant to upgrade the GPU right now, being that a year ago, Aximmetry's recommendation was the Nvidia 3080 (as opposed to the 4080 as of now). Is there a reason the 4080 is the recommended at this point in time?

Appreciate your feedback! thanks!

That Threadripper is 6 years old now, so it might be that the single core performance isn’t suitable for the kind of high single core loads that Aximmetry and UE5 have. That being said, we’re running a Threadripper 7960x and has never come close to being overloaded with any UE5 scene.

Regarding GPU recommendations, I’m not sure what you mean? It’s hardly surprising that Aximmetry would upgrade their GPU recommendations as new GPU’s are released, right? The recommendation is always to get the best GPU you can afford. In my opinion, the time you save not having to heavily optimize your scenes is well worth the investment. A 3080 is quite underpowered at this point. My recommendation would be getting a RTX 5090 if you’re going to upgrade your GPU. It’s insanely more powerful than a 3080. 

Hi,

I’m not sure that having more CPU PCIe lanes will provide much advantage, if you count the lanes required by your capture cards. What really matters is whether your motherboard offers enough PCIe lanes for your high-end video card, capture card, and any NVMe drives.

Generally, Ryzen processors perform better with Unreal Engine because the engine is usually bottlenecked by the CPU clock speed rather than the number of cores.
Nevertheless, I think you should really experience better performance with the Threadripper. 
When Aximmetry is showing 90%+ CPU usage, do you also see any individual core at 90% or higher usage in Task Manager?