Hatch fills entire screen and seems to slow program

[malloryR6EZ6]

Often after we have loaded xrefs created externally, I'm guessing they were made in Civil 3d, the file they are x-refed into runs slowly and opens with a hatch or line filling the entire screen. It goes away if I zoom out enough to "turn off high quality geometry". I've also tried cleaning the xref files to no avail.

Let me know if anyone has found a solution. 

Also see screenshot for how it looks every time I open certain files...

[pendean · Accepted solution]

@malloryR6EZ6 You are running an OEM version of AutoCAD, you'll need to ask that OEM vendor for guidance with their software https://www.landfx.com/support.html as you might be missing an update or need to turn off GFXDX12 variable (or turn off hardware acceleration?)

Your C3D files creator might have to make changes too?

[malloryR6EZ6]

Figured that might be the culprit, I'll head over there...