Live-TV stuttering after turn Deinterlace on

Stream live tv from my Dreambox800se to my idevices(iphone 6s/ipad mini 2/ipad air 2), ios versions including 10.2(jailbroken) and 10.3.1(unjailbroken). The same issue happen on all my idevices.

No matter the streaming is SD or HD, I have to turn the “Deinterlace method” – Off in Video Settings, or the live TV starts stuttering. And when turn the deinterlace off, the pics are really bad.

Do you guys have the same issue?

Anyway, when I play the live TV on Kodi for Mac or windows, I do not have to set up anything about video, it plays well.