@Brad_Olwin @MKPotts @Inge-Nallsson you guys seemed to have nailed it, I uploaded some workouts to runalyze and the heart rate variability and r-r intervals of my last workouts are all over the place. Older workouts have accurate data.

@Mauerwegler thank you for your suggestion aswell, I had the polar flow app connected aswell and removed it (used it to check the battery levels on the sensor)

I ordered a new strap and will post an update when I had the chance to test it, but im fairly certain it will solve the issue.