Well, I've printed so many small, detailed things where accuracy was the prime consideration, and I've long ago forgotten the S3D profile defaults for M2 for print speed, acceleration, etc. Now I'm printing some bigger stuff where speed is primary and accuracy is secondary. I could load the default profile, read those off, then open my personal optimized-out-the-wazoo profile and type in those values. But my real question is: How fast can it go (given info below)?
Using MG black PLA 1.75mm, 0.35 mm nozzle, 0.2 mm layer thickness. I'd like to leave the acceleration at my reduced settings to keep the ringing down at the corners, but I want to lay down infill AFAP. I'm not going to change my lower acceleration values. This thing is basically a particular size brick with one corner rounded -- utterly simple shape. Since I'm using 0.2 mm layers, I'm not going to go to "sparse infill" to save time -- with the 0.35 nozzle, I'm not interested in trying to do 0.4 mm thick infill. And I can slow down the perimeters, all that stuff, to make it look nice.
Anyone done the calculations? If not, that's fine. Given the specs on the makergear.com M2 page, I can probably calculate it out if I think about it hard. Just trying to not have to think hard!!! (Maybe I'll call Josh in the morning...

TIA,
Dale
Edit: I really like printing with infill at 0 and 90 degrees, instead of diagonally. Here are the second and third layers (MG black PLA, beta dual hot end, hair spary, bed at 70 C, nozzle at 223 C):