Are you facing this issue for all the document. If yes, can you please send us one of your sample document for analysis. This will help us in isolating the actual root cause.
If issue is specific to some documents then please share these documents for analysis.
You can send us your packaged document with assets to “sharewithID@adobe.com” email address.
An error occurred while saving the commentAnonymous commented
I have been having this same issue with all documents. I have found that if you turn of the GPU performance it helps with this issue but why did this just all of a sudden start happening and is there a fix yet?