Help with Marlin Config for SKR E3 V3 and start stop burn lines

I have a core XY setup running Marlin BugFix-2.1.x.

I am having problems with printing anything with shading where i get start and stop burn in on each line. I am sure it is a setting I have missed somewhere as I used to run Klipper on this machine with no issue but wanted to switch to marlin so that it could be controlled by lightburn.

I have tried different accels and overscanning with no change. It almost acts as if it hesitates at start and end of each line. I have also not been able to get the laser to fire using Inline mode.

Configuration.txt (134.8 KB)
Configuration_adv.txt (187.7 KB)