[PC] Items placed in a room 'flicker' when placing/deleting windows and doors

xAxekk​  That's much appreciated, thanks.  And just to be clear, the doors in your screenshot do or do not have the effect?  I think you're saying they don't, but I want to be sure.  You don't need to reply; just specify in your previous post.

I would ask other users with the same issue to post in this thread, and provide a dxdiag if running Windows, or if they have a Mac, all the info under About This Mac except for the serial number.  It's a lot easier to handle one thread per issue.