I usually print Polyterra PLA at 210C but I had some issues with it lifting off the glass bed on my Enders. I never tried printing it below 205C and I have yet to try it on my Neptune 3 max so maybe the lifting issue won’t be a big deal with the PEI sheet bed. It does kind of feel like a terracotta texture which makes me want to try that red out now.
I wonder if I tried printing it at even lower temperatures if I would also get the delamination issue like you had.
It’s been a while since I bought from Polymaker and I don’t remember seeing that satin finish PLA+ line before but I’m definitely going to look into it. I also saw they are now offering dual color Polyterra matte filaments which is super cool.