An update with a workaround if you experience this and how to identify:
I have a workaround where I installed CCleaner and put most apps into hibernate mode. Now my temps stay below 30C when charging.
To see if CPU draw is the issue, turn on developer mode and look at inactive apps in the apps section. I noticed as soon as I plugged into a charger that all apps became active on the V60 with the heat issue. Other V60 without heat issues still kept many apps inactive. The A11 update for V60 is super buggy. Actual A11 is buggy for many phones (look up OnePlus 7/7T A11 issues for those with worse situation)