Driver issues can and will crop up regardless of the GPU you choose.
With regard to is the P2000 superior to QSYNC or Software. Software has the advantage if your media drops below 4Mbps, otherwise the P2000 and 9th Gen QS are equivalent in quality.
Since they added the toggle for disabling HW encoding, you can use it to get the best of both worlds if you have enough CPU, let the GPU decode and let the CPU encode.
