This appears to only happen when in cadworx. when operating plain jane autocad i cant replicate it. when i go to attach xrefs the display will enter a loop of flickering that can go on for many minutes.

https://youtu.be/vnohtN_2dOs

https://youtu.be/9vh4QiDMxtg

this appears to only be happening when i have the cadworx palettes loaded

Hey Trey,
If you have more than one drawing open this issue could happen. Try and close out all other files and see if the issue continues.

still seems to be happening even with just one drawing open

Ouch, maybe check to see if you are running the latest.

What version of CADWorx are you running? If it is 2019, you likely need to have the latest service pack installed.

Is it CADWorx 2018? If so, this patch resolves the issue along with the Civil 3D Object Enabler not loading in CADWorx Plant. Here is the link, the fix only works on CADWorx 2018 on AutoCAD 2018. https://www.dropbox.com/s/ycslkb256u0w5kh/CADWorx2018_C3DOE_fix.exe?dl=0