Major problems with flickering

Really hoping someone can help me. I have a TM model that all of a sudden started having some major issues with flickering. This was originally built in Sketchup. I've attached a video clip. Other than adding some tables from the library, nothing else has changed, that I know of, that would cause this. I even took the tables back out to see if somehow they were causing the issue, but no change. I have a very good gaming system running this. Geforce RTX 3080, I9 processor, etc. I don't get it, unless the model finally reached a size that was too big? I

The white areas flashing in the video should be brown mulch like on the left. I checked in the SU model, and there is only one face, no competing faces, so I don't think it's Z-fighting.

If anyone can help I'd really appreciate it.

Hello kate and thank you for posting in our community.

The first thing that I can think of, would be to use the eye dropper to select the problematic area.

From there make sure that your material is double-sided. If the issue is still there, please use the "Contact Us" button to report a bug and attach your file.

A support agent will take a look and get back to you.

Thank you

MC