Short answer: No.
The way the Windows system is designed, one app cannot slow down the other. If an App uses excessive CPU or memory, then the entire Windows system, thus ALL application, will slow down. You can verify this by looking at the CPU and memory usage in the Task Manager (that’s where you go to kill CPRS when it is frozen). The network congestion or VistA slowness are more likely causes of CPRS slowness. Nothing changes in CPRS, Brillians, or other Apps on a day-to-day basis.
What can the users do: To keep Windows healthy and up-to-speed, please RESTART Windows at least twice a week, e.g., at the end of the day on Tuesdays and Fridays. (The VA OIT recommends that you leave the computer turned on at all times.)
Note that log-off and log back into Windows does not clear the memory, device drivers, and many other accumulated internal errors like RESTART does.