Print quality when printing from GCODE

I’m experimenting with using Slic3r and GCODE to print on my Cetus, and I’m having persistent problems with stringing.

I’ve tried all the usual remedies: retraction, retraction speed, print temperature, travel speed, Z hop; in pretty much every combination I can think of, and nothing seems to make much of a difference.

There’s no stringing when I print from the Cetus software, only when I slice with Slic3r and print using the GCODE. So I know the hardware is capable of printing without the stringing.

Anyone have any suggestions that I haven’t tried yet? Anyone manage to get good print quality using GCODE?

Thanks! If I find a solution I will share it here.