Hi folks, author here. Happy to answer questions.
replies(1):
Right now I have the TV disabled, but if I go to the Display settings and enable it, the TV and monitor have a huge gap for some reason and KDE can't apply the configuration since it says that there should be no gap between the displays. I can of course fix this manually and apply, but if I disable and enable the TV again it seems that it forgots my layout and I need to setup everything from scratch again.
But anyway, thanks for the fantastic work!