Bad combo.
The soft surface can block the heat exhaust ports.
If the machine gets too hot odd things can happen......slow downs/crashes/other.

Processes.
Perhaps the easiest way to reduce this number is to review your startup group/list.
Msconfig/startup.
Untick the unneeded stuff and reboot.
I think you'll see the processes have dropped.

What's not needed?
Google is your friend.