Seems as though the AA in this cod is different than in years past. High dpi, steady aim, etc. seem to have a negligible impact. Potentially due to the piss poor servers. Oddly enough I’ve found that low dpi and 250hz made the AA bubble easier to maneuver than high dpi 1000hz.
Not sure if you’ve tested linear in-game setting but it definitely has the least amount of AA. Tough to find the sweet spot though.