I have two ways to monitor my solar generation; Sense and micro-converter software. Typically the numbers are very, very close. Today I noticed a huge difference, Sense being 1,500 watts higher. Now I wish Sense was correct but I think there are physics involved which would make that improbable if not impossible.
Without seeing a picture I have one anecdote - I was seeing a lot of flux in both solar and usage a few months ago. Based on advice from Sense, I pulled both leads out of the unit and blew - like you’d do for a Nintendo cartridge back in the day. That seemed to have solved the problem. Another anecdote - one year to the day after I installed my sense, the device went haywire. The next day and ever since it’s been fine.