I have not tried this with newer Xbox consoles as Microsoft may be actively blocking these types of adaptors from now on.
Otherwise, happy to report this works almost exactly as it should out the box for Xbox 360!
If you are having sensitivity or deadzone issues:
Try pressing "View/Share/Minus+B/Circle/A" depending on your controller brand while connected and the unit should briefly flash red. This fixed walk speeds for me. Press "View/Share/Minus+X/Square/Y" to change it back if desired.
Much better alternative than trying to find/fix old 360 controllers, allows pro controllers with rear mappable buttons... works great with Victrix Pro BFG. It's a little cursed bringing up the guide with the PS button 😅