Pistop server temp drive not purging keeps filling up

[chigginsq]

We are running Switch and moving files to be processed into PitStop Server. The boot drive is 1TB and usually runs at more than 90% free space. As it processes files they are written to the temp drive which is designated in PitStop Server to be the boot drive. PDFs when done are written to another drive entirely. The Boot drive does not clear out space sometimes. it gets filled up and we have to stop Switch then PitStop Server and reboot. Then space on the boot drive is clear. Any idea why it does not clear out space in the temp folder on the boot drive? This has been happening recently. We did not have this issue happen before two months ago.
Running PitStop Server 13 and Switch 17

[freddyp]

PitStop Server 13? Switch 17? Sorry, I am not going to spend time investigating this. If it worked well until two months ago, it seems obvious that something external is causing this: operating system update, changed security settings, ...