I also have issues (as everyone, as I read in the slash user group). In particular I’m having Z axis slipping on first layer/s and adhesion problems (never had those with 3.13! Every model was sticking too hard on the build plate before!)
However I have to say that the first build plate going down and immediately up isn’t a layer. It’s a sort of calibration, maybe to detect a z axis miscalibration before the print, I don’t know.
The print begins just after that.
Peichao Wang was so kind to suggest me to print first millimeters with some more exposure (ex. 2.5 sec at 0,1mm), with rise of 8mm and motor speed low, to improve reliability of first layers. I’m trying just now and it seems to help a lot.
I’m also using a led power of 200W to generate a smaller peeling force and it seems to be reliable.
I hope it could help 🙂