I know this was probably asked before but I just want a quick reply. I play on a v 3.50 high resources engine and the blunder alert priority is set to normal. The chess engine priority isn't the lowest, but it's far from the highest. When I try to modify the priority Chessmaster warns me that changing it may cause some problems. Would putting chess engine priority to the maximum (and perhaps the blunder alert priority to a minimum) make CMGME even stronger?
No. Chess Engine Priority controls the CPU percentage between the engine and the user interface... if you change it (which isn't recommended), it could cause the GUI to because sluggish and/or non-responsive.