Firmly "meh", bordering on "oh dear".
As a massive fan of AHS and indeed most of ryan murphys shows, I was really looking forward to the premise of a season of self enclosed shorts - and when I saw the 1st was to be an expansion of Murderhouse, assumed most would be side stories of the other AHS worlds/ building on their side plots, or interesting stand alones set in the AHSverse...
Unfortunately, a few in and it feels more like rejected main season side plots and master storylines, or just leftover thought starters from the ideas board that have been given to film school students as an assignment to flesh out.
That is, there's the odd standout, but most teeter on that line where theyre neither good nor bad, but almost all would've been a LOT better with a bit more polish, a more experienced production crew and or stronger actors.
On that, overall the majority of the casting and acting is shockingly poor - there's the odd AHS alum and actor-they-spent-most-of-the-casting-budget-on showing up and raising the bar right up, but that's balanced out by the old gag of having people in their late 20s playing teenagers, and the bulk of the cast are sadly, distractingly, pretty bad - varying from "they'd be OK as non speaking part extras" as per almost all of the "teenage" cast in the Drive In episode, through to "everyone would be better off if they never acted again" e.g. Noah Cyrus and whoever her mate is in the final episode - and the scripting is rife with horrendous lines nobody in real life has ever said or would say unless taking the mick - is for the most part doing no favours. Its the kind of thing that seems petty to bang on about, but really drags you out of just being able to watch and enjoy it.
The stories themselves also are rushed (obviously, since they're condensed to under an hour) - and as such a few potentially excellent plots suffer quite badly for the shorter runtime. All the stories, except perhaps Ba'al, lack the dark, rich, campy spirit of the full AHS seasons, and feel very much like they're aimed exclusively at the YA audience (while failing to recognise that "YA" doesn't equate to "vapid").
And this self-contained, short run model, when at their best, serves to cut out fluff filler and keep the story firmly on track - when at their worst though, you have the protagonist literally narrating what would be bridging scenes, or the reason why something is happening, instead of actually showing it.
Overall, I'm treating this anthology as a stopgap to keep me busy while AHS 10 is available to watch in full, definitely won't rewatch, and don't really recommend unless you're really bored.