>>533709881
>>533710101
>>533710137
>>533710235
looks to me ergonomics the opposite effect on sway. Higher ergonomics has less movement than lower ergonomics.
Webm depicts moving from a sprint to third person ADS over the same distance and with the same timing for the same stamina consumption and recovery time, and to show both moving and stationary sway.
Left is eruptor with iron sights and angled foregrip while wearing peak physique for a total effective ergonomics value of 65
Right is eruptor with 10x scope and vertical foregrip and no peak physique for a total effective ergonomics value of 11
They are then overlayed with the lower ergonomics at 33% opacity, appearing as the fainter third person reticle.

A difference of 54 ergonomics value between the two setups and the lower ergonomics setup appears to have significantly more vertical movement in the stationary sway than the higher ergonomics setup. The third person reticle stays closer to the center on the high ergonomics setup compared to the low ergonomics setup, which only makes sense as the higher ergonomics makes the weapon 'recover' faster from the sway induced movement like it does with recoil induced movement.