The number of processes varies, as the computer is somewhat of a living being. With only Windows and Google Chrome plus a few extras, I had 91 processes running, with AMD FX-8120 CPU, 8 cores, jumping between 1-6%, up to 29% at times of load. After a restart, I now have 86 processes... it's not a constant.
Unless you have problems with performance = your computer stalls, or something else, I see no problem.