Mouse issues since last update.

Is anyone else getting any weird mouse issues since the last update? Using a G502 Hero and all is well when I launch the game, but after one match, my mouse settings go all funky. DPI changes, left click isn't registering, but all is fine once I fight my way through the UI into another match. Once back in the menus, it's all funky again. Drop out of the game entirely and my mouse settings are absolutely fine. Only once has my dpi actually changed on the OS level.