I wrestled with this frustrating issue – and now the solution makes so much sense! Thought I would share in case it helps!
When you have multiple displays with different resolutions, you should line them up so that the smaller one is centered on the larger. Otherwise when you attempt to move the mouse cursor from one to the next, near the top menu bar or bottom task bar, the cursor will run into a “wall”!
Do this:
Not this:
Or your cursor will run into a “wall” like this:
