Hey there, afaik those should be already simulated when you run with ace. It's possible you need to turn them on in the ACE settings.

Ive noticed this, i have all my ACE settings on and ive noticed almost ZERO shot deviation across all tbd artillery pieces, in my testing with FULL 100% WIND, i had maybe 5m radius on target with the 105mm at ~5km, with the 82mm 2B9 i was getting maybe a 10m radius off target, but was full auto while testing at ~3km. Mortars had ZERO dispersion, at ANY range, but i did notice at least on the M29 it felt as though the shots were going far when i had a tail wind, but a new range table was there with 2 different ammo types of each, on all charge settings. Will make another post for this but might just be ACE, will test on the 252 and 2B14 before i write that up, couldve been using the incorrect one but i tried both, so it at least felt like the tail wind was carrying the rounds further.

Otherwise i love the mod, so dont take this as me really harping on it, i would just prefer to not have it be almost laser guided accurate at range with wind and have to manually spread the shots around, however i did have fun testing, even with it being a PITA operating these solo lol

EDIT: OK, so an edit was in order, spent an additional, idk 2.5 hours shot testing and i did find that everything has some dispersion minus the 81mm M29 from SOG, and the 2B14 from RHS. Both have ZERO spread, and just drilled a hole into the ground, all guns except the 105mm tested at 2800m (arbitrary range, was doing accuracy tests and decided to test some spread at this range for giggles, found some on the 252 and then did the rest). This is not indicative of all ranges but id assume they'd get bigger splash zones further out, but not going to test anymore for a bit. Will post results in another discussion for the "spread" of these two mortars.