This is just not enought to go over 35mm3/s (there is a video of CNC kitchen explaining that, it is not proportional), When I was triying CHT on Bambulab I was stuck at 35mm3/s because the temperature was not able to go over 220°C, setting 230°C it was sticking to 220/221°C when I was printing at 35mm3/s. But anyway it is still more than 50% improvment in speed, wich is already very very good.
I only tryied 0.6 CHT, am gonna order a 0.4 nozzle now 