Is there a way to reduce the CPU usage? I'd prefer not to have it running at 100% all the time.
you can adjust the number of threads used by adding "-t" and your desired amount of threads used in your batch file.
So if you have a four core CPU with hyperthreading but you only wanna use 4 threads on the miner it should look like this: -t 4
Your best bet is to try a few different settings to see what works best.
Hyperthreading doesn't always work on all miner programs, so you might want to go with -t 3
You can always do two separate bat files. One for when you are using the computer and one for when you don't, providing you want to leave your computer on to mine.