You need to install the tizen-studio and connect it your tv. Then you run the following command:
./tizen install -n hdhomerun_view_tizen_20220204.wgt

Nick, I heard of some open source player that can be used instead of the Samsung player. It might be faster to use those. Do you mind the share the source code (html and js). I could take a peak and see if I can improve anything! Here is a list of other players: https://ottverse.com/best-html5-video...

nickk could you share the source code for the samsung app with me?

I installed the application on the Samsung TV QN90A but switching between channels takes 25 seconds!

I wish you could share the source code to see if there is room for improvement. I guess the application is using Samsung player to connect to DLNA server and it is slow!