Can screenshare but not games

Whenever i  screen share, it works well if i just show google chrome, or any other thing that is not an "application" or "game".

If i stream a game, all of my friends can see it though, except for one guy, who always crashes my stream. How can i fix this? I've redownloaded discord several times. He does not crash any other persons stream, it's only me when im streaming games.