lholiday

When playing 2 player and during a match, example killer instinct or other fighting games. All the keys are mapped correct, but seems to happen when pressing constantly during a match. The retroarch game pops out and rocket launcher is open but the game is still playing in the background. Il close/exit hyperspin and the game is still on retroarch. But it's not working properly and I have to use task manager to close retroarch to close it. How do I track down the cause?