-Hi, my name is Claudeir, I'm happy to help you!
Any game/software installed in any user profile will also be present in another one.
But this shouldn't be a problem, if you have a good amount of spare space, why would your PS be slowed down just by installing a new game/software? unless this new program is being harmful to the system, making a huge use of processor and memory, even when not in use.
I'll leave some suggestions to improve system performance:
https://support.microsoft.com/en-us/windows/tip...
-Feel free to leave your opinion, marking as answered if the answer helped, or leaving more details so that we can continue the service, this is very important to us.
Graciously,
Claudeir