1. Find system breaking bugs in the code and patch them
2. Have redundancies with the system. Like if one fails, get another one up and running.
3. I think the MTA will flatly refuse to buy gaming PCs from anywhere. They have huge markup and you don’t even need the GPU in it if the PC is prebuilt. (Plus, I think the MTA gets their computing needs from large volume corporate electronics companies like Dell, HP, or Apple.)
And yeah, an 8th gen Core i5 (or Core i7, for that matter), is probably unable to handle the demand for BusTime and other MTA services.