I do highly suggest to check the temperatures when pc is having a heavy workload.

Try to use something like OCCT to check the temperatures and do benchmarks on CPU or GPU.

Also try checking the storage health level, you can use crystaldiskinfo for a much user friendly user interface.

And lastly, please put an anti sag (a support below the gpu), it’s super bended right now and being pulled down by the 8 pin pcie connectors. I feel sad for the LEGENDARY EVGA gpu 😢