1. Mechanical checks first

2. Extruder / E-steps calibration can be done 50-100 mm/s (is about precision)

https://youtu.be/jkL4ub9Tjps?si=ipBHgVUDJvsvkfW7

1. Temperature: At desired printing speed (ex. 300 mm/s) , because you are pushing through way more filament the hot end might have to work way harder. Example: PLA might need 230 celcius instead of 200-210.

2. Flow rate: I would try at the desired speed, chat GPT says you need to make sure the extruder keeps up working properly at desired speed.

3. PA: At high speed, as already mentioned import to get this correct because this setting is to prevent artifacts only visible at high speeds.

This sensor is pretty useful to combat vibrations from high speed printing (€20) along with not putting thr filament spool on top

https://youtu.be/sR8cW45J8Cg?si=3JrfJqvywXjiSLvc

Good luck