Limit the speed
Why do want to push the speed too close to the limits?
Use bigger motors or back off.
Cutting too much air at high speed? Optimize tool cutting paths.
Run within the proper limits steppers NEVER stall.
For reliability I have reduced 2500mm/min to 1500, and with expensive tooling and material have never had a problem in over 1000 hours, but might have saved 10 hours and lost $$$$$s of time and expensive materials. 80000++ parts and no stuffups, all on a syil SX3.
If you want a rocket ship use a servo based system and pay the money.
Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way.