The system CPU usage percentage only shows the total CPU usage. Aximmetry and UE4 doesn’t split the load evenly across all cores, so in this case you’re probably overloading a single core. 

What resolution are you running the project at? You can change what resolution UE4 is rendering at indepently of your Aximmetry project settings by changing the 0.0 values in the UE4 module to a resolution that works without overloading the CPU/GPU.

Thanks for the response.

We're running the resolution at 2560x1440. It's a multicore system, so it shouldn't have any issues in that area.

CPU   : AMD Ryzen 9  5950X 16-Core Processor 3.40GHz
RAM  : 128GB
GPU   : NVIDIA Geforce RTX 3080 (GPU Memory 10GB)

So, for your suggestion, are you saying we should lower the resolution? I spoke with our project manager and he would rather keep this resolution if possible. Is there anything we can do or look into resolving this issue without downgrading the resolution?

Thanks for your time!

Sorry, were there any updates or specific suggestions we should look into to fix this problem?

Aximmetry and UE4 prefer higher single core clock speeds, so many cores is actually a disadvantage. Your per core speed is quite low, so it’s possible one of the cores is working at 10% while the others are more or less idle.

As a baseline, what is the GPU/CPU load with the included Aximmetry UE4 sample projects?

Given that everything is set up correctly and that the hardware is working and is cooled properly, you need to optimize your UE4 scene. The easiest way to do that is to lower the rendering resolution, but there are countless other things you can do.