Recently, a seemingly unavoidable gameplay-impacting issue has begun coming up any time when playing 7DTD. After roughly 30 minutes, the game will find itself in a state where the very *movement* of the mouse causes a plummet in performance and causes the game to stutter. It does not matter when, where, or is it done, moving the mouse *will* stutter the game graphically. This goes so far as even causing stuttering in a static menu just from the cursor being moved. Switching over to a controller causes no similar drops in performance, it is only mouse movement that impacts the performance of the game. Lowering, changing settings or the native input module does nothing to resolve the issue, only a hard restart of the game once the issue begins will restore performance.
Video of the Stutter Issue (note the torch in the last section):