You can run Ea studio on as many computers as you want Alan. I have two mid range desktops running about 6-8 reactors on each computer and each reactor does about 2000 generations a minute which would be about 1.2 million over 10hrs so yes something is definitely up with your computer speed as it is running 22x slower than mine?
For reference my processors are just ryzen 4700g on one machine and intel i5-10400 on the other so really nothing fancy at all both machines cost me under 1000 AUD about 18 months ago.
Let me know how you get on but looks like we have found the issue at last ;-)