PD8 uses a bitrate of about 1800K for 720P HD. Basically about a third of what is recommended and also used by Vimeo. Unless you are on dial-up, this bitrate is way too low.
So, I copied the default PD8 youtube profile about 3 times and made some better ones with higher bitrates. The process is identical to the way it was done in PD7 and they show up nicely in the Produce, YouTube profile selection screen. Win8 64-bit Pro Retail
Intel i7-4770
16GB DDR3 1600 8-8-8-24
MSI Z87-G45 Motherboard
ASUS GTX 660 Direct CU II OC 2GB GPU
1 TB RAID 1 (mirrored) Drive Array
Several scratch drives for video, TMP, pagefile.