[Sunflux]

Okay, using the recommended settings... I'm mainly looking for the frequent dropped frames every 20-30 seconds...

480p23 + AAC 2.0 + Lanczos3 = no dropped frames (vsyncoff rock solid at 0.0)
720p23 + AAC 2.0 + Lanczos3 = no dropped frames (vsyncoff steady at 8.0-9.0)
720p25 + MP3 2.0 + Lanczos3 = no dropped frames (vsyncoff 7.2-14.2)
1080p23 + AAC 2.0 = no dropped frames (vsyncoff steady at 29.7-30.1)
1080p23 + DTS HD-MA = no dropped frames (vsync rock solid at -33.0)
1080p23 + FLAC 5.1 (to LPCM 5.1) = no dropped frames (vsyncoff steady at -23.7-24.0)
1080p25 + AC3 5.1 = no dropped frames (vsyncoff steady at -2.4 to -2.6)

720p59 + AC3 5.1 + Lanzcos3 = no dropped frames (vsyncoff somewhat steady at 5.0-12.5, but there are slowly increasing skipped frames)
1080i59 + AC3 5.1 = no dropped frames (vsyncoff 1.0-16, but slowly increasing skipped frames)

720p29 + AC3 5.1 + Lanzcos3 = massive dropped frames (vsyncoff pretty big fluctuations -10 to +3)
720p29 + AAC 2.0 + Lanzcos3 = massive dropped frames (vsyncoff fluctuates from -12.5 to +3)

So... looks like there's only problems with 29p (actual 29p) and 59i/p regardless of audio, but 59 is handled through skipping frames fairly gracefully, but 29p gets horrible stuttering periods making it unwatchable. I even have a 0.5mbit 720p stream that causes hundreds of dropped frames a minute.

Oh, 1 more.

1538p29 + AAC 2.0 + Lanzcos3 = a big number of skipped but no dropped? (It's shaky Go Pro 2.8k footage from a drone so hard to see if anything's wrong)