Help Troubleshooting/Solving Signal Dropouts?

[pugboy1321]

Hey y'all, I've done my own research and asked around but nothing conclusive really came of it so I thought asking here would be the best next step.

I've had an HDHomeRun Flex Duo for a little over two years now and I love it but I've been having some signal issues with breakups/dropouts that I just can't seem to solve, and it's exclusive to the HDHomeRun, they don't happen on my TV's built in tuner with the same cables/antennas.

My working theory is the signal being too strong but I've seen conflicting opinions on if that's actually an issue that can occur (but it makes sense electrically to me). Without giving too much identifying detail, I live in a high-rise apartment in a major city and out one of my windows I have direct line of sight with the broadcast tower farm that serves a pretty large region, and that's the same wall where my antenna(s) are located.

The issue specifically is small dropouts/breakups where the audio cuts and the image pixelates for ~1-4 seconds, and it's present in live streaming and in recordings so it's not a playback/decoding issue on the client side.

Antennas I've tried are an old Mohu Leaf Metro, and a Philips SDV8201B/27. The HDHomeRun and antennas are near computers/networking gear including a wireless access point but there's physically nowhere else to really move them to in the apartment.

I've been starting with trying cheapest solutions first, so far a frankly hilarious stack of attenuators has helped by knocking the signal down and it seems a bit more stable with less frequent breakups, but they do still happen. (By frankly hilarious I mean 3+6+10+20Db in various trial and error combinations to get it just right and even then sometimes it'll only drop to 90% signal strength).

Anyone have any suggestions for what I should try next? Maybe an LTE filter given the location? Some people on Reddit suggested to get a Channel Master Out of Band filter but I want some more opinions before I drop $40 on that.

Thanks!

[NedS]

We would like to get some diagnostic data:

1. Please go to http://hdhomerun.local
2. If it tells you that a firmware update is available, please install it
3. Click System Status
4. Check the Send diagnostic information box
5. Go back one page
6. Click Channel Lineup
7. Click on Detect Channels

Reply back to this post and provide us the device ID of your HDHomeRun and we will check the logs. You can find the device ID on a label on the bottom of the HDHomeRun itself.

[pugboy1321]

Diagnostics enabled and channel scan completed, Device ID is 1094BC45