@tig said:

No image 😕
What is your graphics-card?
Are its setting allowing Sketchup to set things as it wants?
Have you tried adjusting the settings under Sketchup's Preferences > OpenGL to see if they have any affect?

1)msi 560 gtx twin frozr
2)i'm not too sure, lol
3) openGL is on, didn't really tweak on it.

oddly enough, i tried copying the entire model and pasting into a new instance of sketchup. the bug/glitch is gone, and on top of that, the operation became as smooth as when i first started the project..cool. Prior to that I used the Purge plugin, (yours right? awesome plugin), it removed unused stuff but the glitch remained and no performance impact, as compared to the copy-paste step. I thought it could be that the size of the model was starting to gain weight...but..

I don't understand how it worked, but it did anyway! I'm gonna go sleep now..