Ah ok, thank you!
edit: Strings did it for me. I did a little Mandelbrot zooming performance test and the best results were from GML(YYC)+Lua drawing with buffer_set_surface, which was about 7% faster than drawing with draw_point_colour and 25% faster than buffer_set_surface all in GML(YYC) without Lua. Uncompiled GML+Lua was ~400% faster than pure uncompiled GML