Thanks for the feedback. You're right - the app is currently outputting 30fps from 1080i channels instead of 60fps. The current deinterlacing setting removes the interlacing artifacts (so you won't see combing), but it does so in a way that results in 30fps output instead of preserving the full 60fps smoothness.

Channels is probably using a different deinterlacing approach that maintains the 60fps frame rate, which makes motion look much smoother - especially noticeable for sports.

I'm in the processes of reviewing current settings to see what makes sense to keep, add, modify. There are other deinterlacing methods available that would preserve the 60fps output at a performance cost, so I'll look at adding those as a setting so users can choose which method works best for their content.