Mouse remapped itself and slow after patch

Hello!

I hope this is the correct place to post this, but after the last patch my mouse (Logitech G600) has remapped it's buttons that I had set to seemingly random keys. I had the G18 button to raptor mount, G19 to Springer mount, and G20 to walk. Now, If I try to change them back my mouse moves extremely slow and the game will not even let me remap the G18 button. It recognizes the G18 button because it casts a skill, but I cannot remap it. This horrible movement speed (one full movement across the mouse pad left to right moves it less than half the screen) persists until I restart my computer. This is happening in no other games and I can recreate it just by remapping those buttons minus G18. The mouse speed in Windows 10 is the same it has always been and increasing it has no effect. Once I restart it's fine. I remap the buttons in any other game and it's fine. I remap them in GW2 and it goes haywire until system restart. If I restart and do not try to remap the keys it works perfect.

Thank you!