..........It seems to not really underperforming
Might want to measure that at the panel and again at the controller. Don't trust what Renory is reporting.Wow, the best I can get out of it is 170w and that's with a bright sunny day in Colorado with no obstructions.
Time to start trying to figure out the issue.
Get on the roof and check voltage from panelsI changed the controller to a Victron 150/60. That 170 was the best. Seems to be averaging 70 to 80 watts.
Not sure it applies to your coach or not, BUT, there was a recall on the Solar connection at the pass thru on the roof.Get on the roof and check voltage from panels