Hey thanks. I have been searching and watching tuning and calibration videos on youtube for some time now. The general strategy seems to be to first understand how fast your extruder can extrude filament. heat it up, raise it up, and start extruding 100mm of filament at a time then faster then faster then faster. watching the filament that comes out. When it stops being the same thickness as it extrudes you will know you are past the extruders limits. This is your max feedrate and should be the first number we punch in to our calibrations. And in this way we are looking at max feedrate not as how fast can we print but the limiter to make sure we do not have printer motions outperform what the extruder can do. Then we can look at acceleration and others. But it all starts with understanding how fast your specific extruder can perform with the filament it is melting and extruding.