[Milhouse]

I'm not sure what deinterlace method I'm using. Where is that setting?

Bring up the OSD:

http://kodi.wiki/view/Video_playback#On_..._.28OSD.29

Deinterlace is in the Video section.

I'll post a debug log if you want. I just thought maybe I was doing something obviously wrong. My "flash" partition is 386856 1k blocks long, is that big enough?

You're confusing a debug-enabled build (useful when experiencing crashes as a more detailed crashlog is produced, but requires a larger FAT partition) with a debug log (wiki) that can be produced from a standard build.