I experienced the weird green bar recently when streaming to an android tablet with AV1 enabled Worth a look
I've read you can use your steam deck as a controller by using virtualhere Haven't tried it personally yet
Built in ad block is decent, you can add extra filter lists the same way you can with ublock originThat said, just install ublock origin and sponsorblock as an extension from the chrome store
I experienced the weird green bar recently when streaming to an android tablet with AV1 enabled Worth a look