Updated to 3.3.1; supports now print very slowly

[FDM4Ever 0]

Evening (or morning, afternoon), thanks for reading:

 

I recently installed 3.3.1 and sliced with the profile imported from my 3.2.1 version - I don't believe anything changed, though I did pour over all the settings and nothing is standing out as an obvious cause of this problem: the outer and inner walls of my prints occur at my normal, expected rate (60mm/s). However, the infill and supports print at something approaching 1 or 2 mm/s. In Cura, my slowest print speed is reading at 30mm/s. 

This issue persists between printers and slicing different files with 3.3.1; files sliced with 3.2.1 print as expected. 

There's no issue for me to go back to 3.2.1, with the exception of relatively long response times on part movement - but I'm curious as to what would cause this issue and see if it's something easily solved. 

 

Appreciate any assistance, thanks in advance. 

 

[burtoogle 513]

There was an issue whereby if you have different acceleration or jerk values specified for travel and for printing support and/or infill it would insert zillions of change accel/jerk M codes. This possibly got fixed for 3.4 so you could try the beta and see if that is better. Alternatively, either turn off accel/jerk control (if enabled) or ensure the accel/jerk values are the same for travel and for support/infill. If it isn't this that's causing the slowdown, I have't a clue! Hope this helps.

[FDM4Ever 0]

That will almost certainly be the issue - thank you ?