Deinterlacing with Fire TV (gen 1)

I’ve read a bunch of threads related to these issues so I apologize because I’m sure the answer is out there, I just can’t seem to find it or figure out exactly what I need to do.

Issue is this: when watching live TV, non-HD broadcasts are interlaced. Normally, the “deinterlace” setting is disabled. This also happens when playing DVD rips, but I can just deinterlace when transcoding so I never worried about it before.

After research I realized I can disable both hardware acceleration settings and the “deinterlace” setting appears and generally seems to work automatically when watching live TV. The MPEG2 streams looks prettty good. But then h.264 video no longer plays correctly, I guess because Fire TV isn’t fast enough. So I have to manually change the settings anytime I go back and forth.

So what I really need is the ability to disable hardware decoding *only* for MPEG2. It seems like this is possible, but definitely not configurable from the Kodi UI, and I couldn’t find an example configuration change to make. Could someone point me to a resource to get this configured correctly? Thank you!