I can try to reproduce here...

What model of Roku do you have?

Is the Roku connected directly to your TV via HDMI using the speakers built into the TV?

What make and model of TV?

The RF path/design is the same between the CONENCT 4K, FLEX DUO, FLEX QUATRO, and FLEX 4K.

The best thing to do is improve the antenna and antenna placement... moving from the attic to the roof will be a big win.

Back when we developed the ATSC 3.0 protocol stack there was no EPG being broadcast.

Agreed we should revisit that... I will dig into it...

Our focus is the best possible DVR within the home.

MDNS uses multicast - it most likely won't work via a VPN either.

The key concept is that you can have any number of HDHomeRun tuners, any number of HDHomeRun record/storage engines, and any number of clients... everything finds everything with ...

The latest TECH3-EU firmware is hdhomerun3_tech_dvbtc_firmware_20230505 which you are already running.

The firmware hdhomerun3_tech_dvbc_firmware_20260313.bin is for a different model - the TECH3-DC.

See here: https://www.silicondust.com/support/tech/

Guessing you have 5.1 or 7.1 speakers and you are watching a channel that only has stereo sound.

If the channel is stereo and you have a subwoofer the HDHomeRun will send audio to the subwoofer with a 3db cutoff of 80Hz.

If you hear a constant rumble it suggests the TV channel may have low ...

It appears the network bandwidth to the PC is insufficient to keep up with TV.

How is the PC connected to the network?

The HDHomeRun Record engine is off by default on Windows and, even if enabled, defaults to C:\Users\Public\Recorded TV\HDHomeRun unless you change it.

Run HDHomeRun Setup (if installed), go to the DVR tab, and make sure "Store recordings on this PC" is not checked.

Or you can check the record ...

I can check what is happening... please enable "send diagnostic information" in the settings menu of the HDHomeRun app, try watching a channel for 5 minutes, then reply back with the Device ID of your HDHomeRun.

No, but we can try to get guide for the channel for you.

What is the Device ID of your HDHomeRun and what channel is on 15.12?

The HDHomeRun DVR isn't a person. There is no self.

Update...

We have 4 applications without conflicts:
Lubbock CH15
Phoenix CH4
Tucson CH4
Wichita CH20

We have 5 applications with single conflicts:
Fort Myers CH19
Hartford CH4
Phoenix CH5
Tucson CH7
Tucson CH5

We have 2 applications with significant conflicts:
Hartford CH6 (4-way conflict ...

DJ-Daz wrote: Fri Apr 03, 2026 7:43 am I understand I need a DVR subscription to access the XML, but I can't for the life in me find where to subscribe?

https://shop.silicondust.com/

For HEVC content the HDHomeRun app uses the video codec support of the device you are using.

Technicolor/InterDigital Advanced HDR Support will work IF your player device supports it, and if you player device doesn't support it the video will still play fine as SDR.

The log shows perfect reception but the stream isn't getting to the TV fast enough or isn't being consumed fast enough.

Most likely this is a WiFi issue where the WiFi link to the TV can't keep up with the 6-7Mbps stream.