Ultimate Gcode Sender (UGS) does not handle large cutting/engraving files very well. It may unexpectedly stop part way through a job and requite a machine and software restart.
This is an inherent issue with UGS which unfortunately has not been resolved by its developer.
1: Increase the amount of memory Java allocates for UGS to run. This can be done by editing the start-windows.bat file and replacing:
2: Use different streaming software. Some examples are:
vTransfer - Free with the latest Cut2D-Laser Desktop update. (Win only)
PicSender - Available for purchase through our store here: Link (Win only)
GRBL-Panel - Available from here: Link (Win only)