100Mhz LPC1768 gcode controller - Which Firmware should I consider for faster engraving?

Friends, I am seeking for your advice please.
I am currently using SKR 1.3 with Smoothieware CNC flavor and i am very happy with it.
However, I limit engraving speeds down to ~ 80mms/300dpi as this controller mcu is not capable of processing more gcode strings per second and I wish to go faster.

So, which firmware should I consider?

  • Smoothieware, - Cluster flavor?
  • GRBL-LPC?
  • Other?..

TY
Cheers.