LinuxCNC for a high speed 3D printer

I am looking to build a 3D printer from the ground up as a future project. I have not chosen a specific structure yet and am considering a 5 axis setup to mess around with non-planar printing. I already have a good bit of experience with linuxCNC and would like to use it as I plan on using a servo system for the drives. Are there any big considerations or issues with using it on 3D printers? Can it process Gcode fast enough to not run into any speed limits?

how quick can you melt the filament + allow it to cool before applying another layer?

if you run mesa hardware I cannot see any limitation on speed.

Are you going to get servos small enough?

I use steppers and TMC2209 stepper drivers on high microstepping setting (although not on linuxcnc).