[MysticLlama]

Make sure in the remote app you specify LAN, just in case it detected something wonky and slowed things down a little to save bandwidth.

I do understand the audio thing, it's always a slightly odd delay.

Don't know if it'd work for your use case, but there is also a way to put in a registry key and just push the single app(s) you want in windows to your main desktop and not juggle two desktops if that might be helpful.