How do I speed up my prints?
I tried printing a raspberry pi case last night at 200mm/s at 0.2mm layer height.
I set all speeds including initial layer to 200mm/s.
Total Fail 
The filament was skipping, had a lot of backlash from the extruder motor (clicking), and finally the filament grinded away… It was cool to see 
The printer movements seems good though.
No skipping on X or Y.
Any suggestions on what I should or shouldn’t do to bring my prints top 200 or if I dare
say 300 mm/s?
Honestly most printers cannot print at that speed.
Are there printer that print at that speed?
Ok, what should a good baseline be?
It really hard to achieve a real 200mm/s cause your acceleration and jerk should be really high and the extruder will have lot of difficulties to push the filament. You could make some tries in decreasing the layer high to 0.1 mm. This is one test i done at those speed : https://youtu.be/WnnXbRyDGRo
But there is not a real 200mm/s, you can find a video from Jetguy who made some air print at those real speed and motion is completely crazy !
It’s easier to stay around 80mm/s for most printer.
FDM printing is a fairly slow process, it’s best to just get comfortable with that idea, honestly.
You can tune your machine to squeeze a little more speed out (probably), but hundreds of mm/s isn’t a reasonable goal. Like @Cubex_Upgrades ​ said, shooting for 80 mm/s would be better, and you may even have to settle for 60 mm/s depending on the hardware.
So, what do you guys think of a contest? Let’s see how far we can go!!! We can keep some sort of rap sheet on who goes the fastest on a benchy 
Who’s up for it?
Not necessarily fair if some people are using a delta and some a Cartesian haha but I would be interested. Best way to get higher print speeds is to up your temp and really get your machine tuned out. I don’t see 200mm/s on a Cartesian happening especially if it’s direct drive. Just too much inertial mass.
Best way to get print quicly and clean is to mix speed, for example the rocket gnome from makerbot, where setting was 0.16 layer height for the native size, 0.3 nozzle, printed in ABS from esun. Speed was my main goal so i setup 200mm/s in main speed, 50 % for exterior loop and 150 % for infill. I was a little disappointed when comparing time from s3d and real time (1h40 vs 3h) but i was really happy with the result (still have to find the right M572) : https://drive.google.com/folderview?id=0B3QhjlM2HLWsRm5GT2dCRU80eDA
@Mark_Rehorst ​ agree !
You can’t print every element at 200mm/s. First layer must be slower for sure. But it is absolutely possible to go much faster than 200mm/s with a FDM and still get a decent print.