@scalz Maybe this: https://en.wikipedia.org/wiki/Net_radiometer I'm not sure if it's overkill, but it does look like it would do the job.

Maybe its broke.... The China stuff is not everytime the same quality Do you have another one?

@hek The capacitor addition seems to be helping. So far 9 hours and all the values are updating as they should YAY! I'll continue to monitor but i'm hopeful that this is the solution.