I think the profile in our database was defined wrong in that X and Y are now switched.
So X should be 3840 pixels. (it was 2400) and vica versa.
I’ve copied a profile and renamed it E10 with the settings reversed.
That will probably do the trick. (checked it with the profile from chitubox)
Regarding slicing; it’s hard to base a conclusion on 1 file.
There is more info regarding the workings of the 2 cores (CPU or GPU) that we use here:
Both have their downsides and advantages. Simply put if you are slicing 1 file CPU will be fast. If you are slicing multiple very detailed files GPU will always win.
Outputs of both engines may vary a little depending on your hardware.
As far as I can see Lychee only uses a GPU based slice engine. Chitubox does it on the CPU.
With formware you have the option to use both ways whatever you see fit.
(in the config -> machine setup -> slice setup tab -> there’s a toggle ‘force CPU slicing’ )