Quotemdcompositi
#define DEFAULT_MAX_FEEDRATE {150, 150, 15, 40}
The 15 is the max speed of the Z axis. For machines other than Tantillus 15 is really fast and could be too fast for your machine because of your voltage or motors or friction etc and you may need as slow as 5
Beyond that are you using Kisslicer with the Tantillus profiles?
Forum:
Tantillus