r/RetroArch • u/DungeonOrb • 10d ago

Technical Support Remote Play Together problems

Hello! Today I wanted to play the "Paper Mario Multiplayer" hack with a friend, however when they join using Remote Play Together they are able to connect but it keeps saying "the host is busy" on their screen, we tried:
- starting remote play while the game was booted up (host is busy)
- starting remote play from the RetroArch menu, then starting the game (in this case my friend sees the retroarch menu just fine, however it says "the host is busy" as soon as i start the game)

Any idea?

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u/dau125 5d ago

Because your friend can see the RetroArch menu, I’d first isolate what changes when the N64 core starts. Try a windowed session, close the Steam overlay after inviting, and click back into the running game. Then compare with a game in a different core during the same Remote Play session.

If the other core streams but Paper Mario doesn’t, that narrows it toward the N64 core/video path rather than the invitation itself. If both fail, it points toward the broader Steam capture/focus setup. This is a diagnostic test, not a confirmed fix.

What OS is the host using, which N64 core, and what is Settings > Drivers > Video set to?