Zzoid

Hello Team! I have a problem with printing overhanging surfaces. Based on the Convex/Concave test, the problem starts at ~50 degrees on the concave side. At the same time, there are no problems on the convex side. I tried to change the temperature settings (190-225), I have 100% airflow starting from the 2nd layer. Changed line width settings (0.4-0.8) at height 0.2, set Arc Welder and Linear Advance, but nothing changes. Any ideas where to look? Plastic PLA Eryone, FBG6 with original, then custom firmware, gears and nozzle replaced (Triangle 0.4) Below are a couple of photos for an example (cuffs and fingers, layers are uneven and sag).