Ideas to tune for 300 % speed I am using PLA and I am looking for ideas on using the Tune option to tune my Prusa i3 MK3 to increase the speed to 300 %.
The 300 % speed works perfectly fine for some of the models.
However, for some of the flat surfaces, the printer cannot handle the speed. The issues are pointed in the image below:

It seems that printer is struggling to supply enough filament.
Can I solve the issue by using the Tune menu by changing settings like temperature or flow?
Answer:
While @dandavis is informative, but this is how I did it:

increasing z offset so nuzzle has enough space to dispense.
Increase temperature +10

Please note that this degrades the print quality, but I am just printing a few organizer boxes. Quality is not essential and not something I expect from a 300% speed.
extruder clicking means you're getting backed up, grinding.

Make the hotend hotter so you can melt filament 3X faster than expected; most materials have quite a range; aim high.
Slow down the cooling fan; a lot of them can cool the hotend.
You have a silicone boot on the nozzle? that will help some.
Use a larger diameter nozzle to reduce backpressure and allow thicker layers.
Try cranking the feed rate

Lastly, consider that you simply might not get acceptable results pushing speed THAT much.