Mic problem when hosting

I seem to have a problem with microphones when hosting in Garry’s Mod. Whenever somebody joins the server and talk on the mic it skips every 2-3 seconds for everybody even when there’s only 2 players in the game. Why is it cutting off every person when they talk? The server plays fine for everything else it just won’t let people say a complete sentence.

I know this isn’t because of my connection because I have hosted in different games with 10 players in my server and this has not happened.

I recently found out when I look at Player List and look at each player it says Muted for properties. Then every it goes away and comes back every 2 - 3 seconds. Why is it doing this on its own?

try typing sv_alltalk 1 in console