Tried to see if the F values of the gcode were what was causing

Tried to see if the F values of the gcode were what was causing things to go slow on my end when engraving. Stripping them & replacing them with fixed value (30000) didn’t make any positive difference to the speed of the engrave (actually would have taken 1.5 hours longer than the original 2.5 hours).

This engrave is 280 x 180 mm & took 2.5 hours using the LW3 generated gcode.

I’m curious what is the largest engrave anyone has done & rough timeframe for it? I’m certain I am doing something wrong somewhere.

Originally shared by Yuusuf Sallahuddin (Y.S. Creations)
https://www.youtube.com/watch?v=tYEZUxx3Sps&feature=autoshare