Yeah, I have access to the beta. During 500vs500 AI battles, CPU load would reach 100% across all cores and threads, while my 2070 Super load reduces itself to about 60%, which indicates a bottleneck from the CPU. Don't worry, though, it can handle most battles perfectly fine
I have a 2600X, which is only slightly better than your 2600. It will run the game perfectly fine. You will see a CPU bottleneck during massive AI battles, however.
I can confirm that the game uses every core/thread on my 2600X, which is 6c,12t