Apple Watch ultra treadmill accuracy .20 miles off per mile

My Apple Watch ultra and series 8 are terrible at tracking my distance ran per mile on a treadmill. However, after calibrating a Garmin instinct 2x and Instinct crossover… they are accurate within a couple hundred feet, which is fine. My concern is the Apple Watch is nearly an entire lap off if I run a mile. This is horribly inaccurate and throws my training stats way off. I understand it being a little off, but not much to this degree. Why does apple not offer a treadmill calibration feature at the end of a workout? Does anyone have this issue, or have had this issue and can off a solution?