Play Roblox on two accounts at once

This is about two Roblox windows after they are already open: focus, mute, and graphics. Install steps for two Roblox at once are in run multiple Roblox accounts.

Focus and audio

A single keyboard will not steer two avatars well. Park the alt in a lobby or trade UI. Mute the idle window so you can hear the session you are actually playing.

If login hangs

A spinner on the second login is a launch problem, not a graphics problem. Use troubleshooting.