I checked a few computers and looks like it also affects the previous 4.1.x version as well. BUT, I also found out that it is only happening on my Nvidia GPU systems and not on my AMD GPU systems. So some kind of issue between the Nvidia drivers and this single app as no other app windows are slow to move on the screen. I will also check the Nvidia forum as it is affecting the latest drivers as well as a previous driver but only happened recently. Very curious why it would only affect the PatchMyPC app.