Samsung tvs have given universal and oem remotes fits for years, reason samsung changing the protocol of their IR commands, result no repeating volume commands. Reprogram the remote for your tv but skip the first positive result and try subsequent codes.
Now when program it no longer asks if the music stopped, which you would click NO for negative result to get to try another code. But now it asks if the music is still playing, so now Yes is for negative results, and NO positive.
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee.