Hi ! 

With the F1, there is a "smart" engraving setting. The software calculates the shortest time to complete the engraving. The laser will therefore move intelligently, instead of moving from left to right. This greatly reduces engraving time.

On the F1 Ultra, I can't find this option. The laser is more powerful, but it is ultimately slower than the F1 to engrave an identical design. 

However, I can see in this video sent by xTool that the F1 Ultra laser moves as with the "smart" option. (From 3'36'')

 Do you know how to configure the F1 Ultra to achieve this result?

THANKS