I'm wondering about BSP version you've used. The release from July 2015 actually has most (and even more) of the SPI fixes merged. Furthermore, on edison-linux git there's also fix for lag between SPI packets. Why do you recommend the February release?
Yes, I'm still trying to get my display work sufficiently fast - I've 4 FPS on ili9341 via fbtft...
jkramarz I actually had the old BSP installed a while back and neglected to update it for this part of my project, I don't know offhand if there are any barriers preventing the newer version from working (probably not). I might revisit it when I'm done with my video card project. I actually didn't throw a scope on it after I had it working, just left it alone to get the demos running - Quake, in particular, looks better than on some other boards.
I looked at the ILI9341 Specs - looks like 320x240 at 16 bit color is one of the modes, so you should probably see closer to 20 FPS once you have it working. Please let me know if I can help you with my steps or if they are unclear; I tried to write up as much as I can in that link, but some of it was from memory.