My mouse is very laggy when hovering over the CAD window. When my mouse pointer is at the top, bottom, or sides of the window it behaves normally. Also, if I left click and hold to drag a selection box, that behaves normally (smooth). Once I let go of mouse, it goes back to very laggy/jumpy. Its unusable. I have used Draftsight on this computer for years, not sure why its not working now. I tried re-installing, renaming the Draftsight folder to "Draftsight_old", verified open GL is in compatibility mode, played with my Nvidia settings. ESnap is off. I have up to date Windows 10, Draftsight SP4, and computer is i7 9700k with a Nvidia RTX 2080. Again, it used to work fine, only thing that has changed is Windows and Nvidia updates. Thanks.