GarageBand
When I'm using the musical keyboard, certain notes do not play at the same time. Sometimes the notes that refuse to play at the same time change, so at times I can't pinpoint which specific notes it is that won't cooperate with each other. When I try to play them together, it will either play one of them, or none of them. Can anyone tell me what is causing this and/or how can I fix it?
MacBook Pro 13", macOS 10.14