Is there any performance difference between udev and evdev in xorg?

[Aryeh Friedman]

What if any is the performance difference between udev and evdev when
configuring xorg?   Also do I need to use one or the other consistently or
can I intermix them?

For reference I am using a nVidia GT 1030 and nvidia-driver-390 on FreeBSD
12.1pl10 at 2560x1440 at 60Hz and it works just fine on almost everything but
replaying 4k at 60fps (for the most part it even works here but occasionally
drops a frame).

-- 
Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org