Hashrate way too low for hardware specs
Hi there, I set up my first CPU rig yesterday and things are not quite going as i hoped.

I have a Supermicro H11DSI with 2 AMD EPYC 7551 CPUs. 
Given the benchmark, it should be much higher... I searched yesterday and today for hours, but there are sooo much things to consider, and I feel like I'm walking in circles. The many options one can tweak in the json config, differ from one system to another. No matter what I try, it stays low. It feels like I'm mining with a single thread.

What am I doing wrong?  Isn't there a config, that helps to utilize all my CPUs cores? 
![image](https://github.com/xmrig/xmrig/assets/150515978/6f97d234-7c13-46a7-966d-e6b668cfaf08)
![image](https://github.com/xmrig/xmrig/assets/150515978/ac4edf19-ace1-4872-9439-30e2dd8259a8)
![image](https://github.com/xmrig/xmrig/assets/150515978/ab3674b8-c4de-49ec-90db-7af8194cd6d3)

Any help would be greatly appreciated! 

