What could be happening here is the "optimizer" is killing processes that use the internet frequently and a lot of it, like windows updater or other applications that perform automatic updates/update checks. If the bot has access to a larger part of your total network throughput, it will run more stable, faster and use more CPU,ram and disk resources because it has to process more bets.

Giving the bot more CPU power won't make it more stable or let it run faster (unless you're on like a single core 1ghz machine), because 99% of the time the bottleneck is your network and the sites bet throttling.

If you want to find out what the maximum betting speed of the bot is on your PC, run a simulation of 1000 bets and time it, then take the total seconds it took the simulation to run and divide it by 1000. (even on a very crappy PC, this should be at least 25) If you're betting at a site and the betting is slower than that, it's your network, the throttling or the site.