>>107157445
I tried it with USB device tree viewer but shows port can do high speed, but works in full speed, see picrel
have no clue what to do to it, there's no QMK info on how to force full speed, or what the problem might be related to.
anyway, managed to increase polling to 800Hz, from stock 500Hz. that's a nice increase, stock Keychron firmware does 500Hz as well. but they advertise it as 1kHz.
I can probably get it faster but I'd like to get 0.125ms frames on usb and then continue tinkering.