Battlegrounds
Sometimes the mouse pointer lags behind my mouse movement, and this causes big problems.
Whatever process takes cycles away from me pointing and moving the mouse needs to be fixed.
Worse, sometimes while I’m dragging something it will drop off… and even worse, sometimes something else is picked up. I have accidentally sold minions that way, and lost because of it.
Could this be caused by internet problems on the user’s end? If so, change that. Could it be graphics are being given priority over functionality? If so, fix it: don’t make your programs incompatible with older systems.