For the PIDs, this was my first time using anything like it. The instructions seem to be translated from Chinese to English by someone not native to either language, but reading a few times helps.
I had no real issues testing and autotuning yesterday.
I will say to make sure you understand what all the gibberish on the PID means before you start going through and changing your settings. Once I knew what I was looking for and wanting to change, it was easy.
It is a little confusing as to whether you are in Manual or Auto mode and knowing if you're setting to 100% power or 100* as your set temp. Getting into autoune also took a few attempts. Be patient and you'll get there.
Once in autotune though, it ramped to 150 and then held within 1.5*. It would overshoot by ~1* and then cool to .5* below set point. I will find out what that translates to in an actual mash on my first beer though as that is measured at the outlet of the RIMS.