We have been trying to figure this out for a few days and it appears windows antimalware executable could be the problem. The way we resolve this is we added worker.exe and FastExecuteScript.exe and node.exe to the windows antivirus exceptions list and it appears this makes the problem almost go away.
Yes we use fingerprints
No we do not use profiles
No inactivity emulation
It's worth noting that we do not use BAS rather we use puppeteer-with-fingerprints directly as a libriary
I will note that we only saw this problem start with 27.2.0 and 1 week prior we saw the exact same issue on our non-bablosoft scrapers that use chrome directly and it started with chrome 124
Thank you for your great system.