Microphone not working?

So I am hosting a Garry’s Mod server and for some strange reason, when another player uses their push to talk key it lags the server badly. In net_graph 5 the voice line goes off the charts. Any help is appreciated.

What game-mode? Are you hosting from within Garry’s Mod client, or SRCDS? If from client, don’t ( causes issues ). If SRCDS, show us all hooks / functions using : PlayerCanHearPlayersVoice.

If not SRCDS, set one up, it is easy!: https://dl.dropboxusercontent.com/u/26074909/tutoring/server_srcds_steamcmd/setting_up_a_server_with_steamcmd.lua.html

FastDL too: https://dl.dropboxusercontent.com/u/26074909/tutoring/server_srcds_steamcmd/fastdl_setup_instructions.lua.html

I did a fresh install, am running sandbox, and hosting using srcds. I have never had this issue before.