This was posted in my computer build thread, but others may just want to see the results.
Test rig:
Windows 10 64bit Fresh Install
AMD ryzen 1800x
AX370 "Gaming" K3 mobo
16gb 3000mhz ram
512GB M.2 SSD (2GB/sec read speed)
WD Black 2TB platter HD
Latest drivers at the time (Late Aug/Early Sep 2017). I tried with regular Nvidia G-Force drivers and also with and without CUDA toolkit. Same results.
Software and Video:
Virb Edit 5.1.3
360 source video was 21:12 (21 minutes, 12 seconds) long
Some gmetrix gauges like speed, track map, g-forces, laptimes
Encoding engine: FFMPEG
Decoding engine: DXVA
Exported as 2.7k at Medium Quality
Results:
8:55 - GTX 1080Ti 11GB Aorus Xtreme
9:17 - GTX 1070 8GB SC
9:33 - GTX 1060 6GB SC
I was expecting a much bigger difference in render times between a 1080Ti and 1060. It seems like the CUDA cores/Video Engine are not being fully utilized, or I did not have all the right supporting software installed/configured correctly. If anyone has any tips on that front, please share.