For no apparent reason, Garry’s Mod started really lagging in multiplayer. I don’t think I changed any settings from the last time it worked, and I even tried uninstalling and reinstalling it and nothing happened. Singleplayer works just fine. I have tried removing all mods.
Here is a video: https://youtu.be/pN6KgdfrWDc
Keep in mind that this happens with any server I join.