Looking at logs I see records like this:

Error - [API] [344, 401, Get, 2] Request Finished with Error!

No Exception

{{"error":{{"message":"\"Missing Credentials\"","status_code":401}}}}

Error - [API] [344, 401, Get, -1 https://api.vrchat.cloud/api/1/analysis/file_720dd701-629f-4d2f-9f85-eac176279756/7?apiKey=JlE5Jldo5Jibnk5O5hTx6XVqsJu4WJ26&organization=vrchat] Abandoning request, because - "Missing Credentials"

I have logs with examples with around 17 minutes, 51 minutes and 6 minutes of missing credentials after log start, should be other short delays later - I had to re-login quite a few times this evening (actually had to re-login nearly each time I wanted to switch instance). Don't see option to attach logs here, only images...

I don't see evidence any requests failing due to network error, only credentials missing due to unknown reason. Is it hard to refresh stale tokens? IIRC OAuth-based APIs do it with special refresh tokens as needed without issues.