Garry's Mod multiplayer voices are broken and distorted

[ficool2]

For some reason the voices are very deep and distorted. Like slow-motion. You can't recognise what anyone is even saying. This only started happening when I started up Gmod today.
I am not the only one with this issue: [URL="https://steamcommunity.com/app/4000/discussions/1/135511455869545643/"]https://steamcommunity.com/app/4000/discussions/1/135511455869545643/[/URL]

[Jelman]

issue with steamworks api, is fixed in the most recent steam beta client

[url]http://steamcommunity.com/groups/SteamClientBeta/announcements/detail/576863790821005635[/url]

[QUOTE]Fixed issues with voice quality in games using Steamworks voice APIs[/QUOTE]