So I just set up a Direwolf20 local server last night (latest version) and set up two computers to connect to said server locally via FTB launcher. Everything is working great but I keep having a weird issue randomly on both machines. Here's the issue:

So randomly out of nowhere mouse movement slows to a crawl, like the mouse sensitivity gets reduced out of nowhere. WASD walking is still normal speed, and if in the menu, mouse moves normally. Checking the settings the mouse sensitivity has not been changed at all. Closing out the game and restarting it fixes it for a little while, but it eventually comes back. didn't happen for the first time until around 6 hours in, and when it did it happened on both client machines within 5 minutes of each other. Even weirder, on the second machine, i noticed that it happens if i turn the volume down on the laptop using the volume down button (F2, but you need to hold a FN key for it to actually do F2 instead of volume, so just pressing volume down itself). If i raise the volume back up using the volume up button, it goes away (though not on a 1 for one, i.e. if volume is at the level where pressing -vol once starts the issue, vol would need to be pressed 2-3 times to get it to stop).

Any thoughts/fixes on this? Thanks ahead of time!