adlabac
HI, We have exactly same problem. Did you manage to solve this issue by setting BUFFEREDSAVE variable?
I am sorry to say we could not find an absolute cause or definite solution to this issue.
BufferSave seemed to help reduce the frequency of this issue for us. At the time, I honestly thought it could have been caused by our server's write cache not being able to keep up with the number of nodes creating the .bgeo.sc files because we only had this happen when we had many machines simultaneously writing very large cache files.
We have not seen this issue since the original post, so I am afraid I cant share much more.
I do hope you get this resolved very soon, it is terrible when this is what slows down production.