I use Draftsite Professional for viewing and editing legacy drawings, recently started having severe lag in the mouse cursor while over the drawing pane, like low single digit refresh rate, making the program essentially unusable.
*Happens on all drawings, even blank new drawings
*Continues after rebooting computer and run DS with no other program open
*Started while using 2020 version, updated to 2023 SP2, no change.
*No issues in any other program, including SW  
*No issues over icons and menus, only over the drawing pane

Has this happened to anyone else? any fixes suggested? TIA