Chris, is there any *known* issue with CyberGrafX based OS 3.9 systems?
After a quick test yesterday I found that on my Picasso96/Picasso II equipped Amiga Netsurf worked as expected (Picasso screen with 16 Bit/800x600 px) while my CyberGrafX/CV64-3D Amiga always rendered images with 8 Bit - even if the screen hat 16 or 24 Bit depth.