Accidentally deleted message so i will keep it short.

Tried printing between 20-70 mm/s.
Most, if not all prints shown are at 30 mm/s.

Unfortunately barrel is stuck in heatsink. If i remove it i am afraid i might break something. Ironically i got the full-metal barrel for the versatility and robustness. (Less likely to damage).

Edit:
I will try this
https://forum.e3d-online.com/index.p...-heatsink.341/