Sorry to hear you are having trouble.
Can you help me reconcile these two statements:
be continuously plagued with an issue of the mouse getting stuck on the second screen
this issue occurs about 2 to 3 times a week and the time it happens varies from the morning to the afternoon.
So it's not happening 'continuously' (generally meant to covey all day, every day, and reproducible), rather, it can be counted on to happen 2 to 3 times a week, yes?
Is the user able to readily reproduce it... or no, its entirely random?
mouse getting stuck on the second screen
I suspect you mean 'stuck on a monitor of the 2nd PC', yes? If you set a hotkey to have the cursor return to the Primary:
Does that restore normal use?
Stardock Product Lifecycle Manager