Syncing with iCloud Paused - Mac Needs to Cool Down

After upgrading my MacBook Air, continue to get the message when trying to view latest photos "Syncing with iCloud Paused - Mac Needs to Cool Down" even though it is NOT running hot, there are little to know apps, processes running that would even cause this issue. Only solution seems to be reboot or revisit Photos from my desktop another day (or view on my phone or iPad).