No problems anymore here, as well with deinterlacing set to linear!
Ran NBC for 3 1/2 hours this morning with Linear(60fps) setting without any issues on the Channels 7.0.2 production version. Tested pausing the program for a while as well as then resuming the program after a while and everything was fine.
Only comment about the Linear(60fps) setting is that it appears less sharp than the Hardware method on my 4K TV.
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Seems to have fixed it for me too, but I can definitely tell the difference in the sharpness of the picture. I hope this gets resolved soon so I can switch back.
Updated to 04.17.0228, went back to HW deinterlacer, and have been running now for 2 hours with no issue. (previously it was occurring every time between 60 and 90 minutes) Will continue to monitor it and keep it running, but would logs be useful at all to you in a non-repro case?
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I updated to latest beta as well and went back to HW deinterlacer. Been running for well over three hours with no issues
I don't know how I missed that post, but that is pretty much what mine is doing. I thought more about it and I realized that it was indeed channels that were 1080i that produced this issue. Per the recommendation, I changed the de-interlacer from hardware to linear 60fps. I have been watching the same channel most of the morning and the symptom has not returned. At least for me, it seems to have resolved the issue.
Confirming what others are seeing — fixed! Running TestFlight 4.17.228 + HW deinterlacing mode.
Same thing started happening to me about the same time frame you refer to. I even bought a new 3rd Gen ATV4K thinking it might be the device. I now have the 2 3rd Gen's, along with a 1st Gen ATV4K. I have tried multiple settings, including matching content, and tuner sharing. I'm now testing Stream vs Direct.
I know where to set the deinterlacing to linear, but I don't have an option to set the FPS. Where is that? FWIW, I'm hosting the Channels DVR server on a Linux Kubuntu box. Going to port 8089 on that box for server side settings, and my Deinterlacer options are Blend, Linear, and Hardware. That's it, no FPS settings.
Thank you, I was looking on the Web portal settings, not in the app. Yes, I see it now. I guess that's not a setting that can be made globally from the server?
Yah, doesn't appear to be.
The only Advanced Playback option there is for Tuner Sharing
https://getchannels.com/docs/apps/usage/settings/
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That explains why I thought it was still happening after switching to Linear, I was changing it on the server, not the Apple TV. After changing it on the Apple TV words and letters look like crap, jagged edges.
I think they're still looking for diagnostics from the latest TestFlight
I turned HW Deinterlacing back on, and using Beta 4.17.228. Will advise and debug if/when erratic video occurs again.
Coming up on 3 hours later, so far so good.
12 hours later, still no lag! I left the TV / ATV4K on all night on the same channel. Deinterlacing set to Hardware, Original = Direct; Match content for Live TV & Extras = ON, Tuner Sharing = Off.
-David
I must’ve hit pause on the whole thread, it sure went quiet in here!
Yeah, I was just wondering the same thing. Has the app been updated with the fix?
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I tested the latest beta today with hardware de-interlacing turned back on and I had no issues after about 10 hours. I would love to see this fix make its way out into a release 
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Not that I've seen yet. I'm still waiting for a status update from Eric here in this thread.