I'm interested to hear you have not had the same CI issues I have. One theory I have with no substantiating evidence is that Linux agents are least commonly used. The Linux agents on hosted builds run in a hypervisor but I've seemingly had the same issues running self hosted agents (as I mentioned AWS).

I can't find an actual issue and again as I mentioned in the post, replacing my AWS instance with a new AWS instance also eventually hit the same issue. Maybe it's some perfect storm of problems but that is just more speculation.