I was do some measurements.... Springs unloaded or up to compressed near the max...Like that
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G92 G1 E20 F340
With near fully tightened spring reliable speeds are not over 80mm/s with 0.3mm x 0.56mm layer (about 120 with fresh new spring tightened, so have little paranoid reserve to spring wearing and plastics material).
There are dual drive extruders with belt (thingiverse, aliexpress), which I want to try it. So if you want to have bigger speeds, then extreuder driver need to be changed. You can have tuned profile, but if extruder is weak, there is that trouble.
So if you look to quality, firstly check if extruder is neough to feed your speed.