UCCNC freezez with Windows 10

[Robertspark]

How many lines is your gcode file?

Does your gcode file have a lot of small moves (i.e. goes not use G02 and G03, but has split the cutpath into a whole load of G01 motion?)

Yes I know that this is NOT a uccnc issue, but Mach3 use to have an issue with the toolpath window struggling on machines with very low (these are the XP days) ram levels, it was possible to turn off the toolpaht window from memory and it was a work around.

It may be something to look and and or consider the number of lines within the gcode file and the motion within the files you are using.