How to splice faster on Input Shaped Printer

Hello, i am using a prusa mini paired with a canvas hub and have the splice core 2, so it would be a palette 2 pro s. I have input hsaping on my printer and i can only around 50% speed before the printer takes filament too fast. Is there any way to bypass that or add a bigger buffer, or juts make the pallete splice faster, thank you have a great day.