Try letting your GPU encoding the stream. That should relieve strain on your emulator.

But.... you really got a system from 2010 (really), I think that might also need some consideration.

@Riekelt Most users with totally red names + no links or picture + new user who post on the forums are bots that will edit a malicious link into their stolen post later on https://www.reddit.com/r/speedrun/comments/1jgozh/question_about_emulators_and_streaming/