same thing as 0.7.4-1.12.2, just for 1.18.1 instead.
repeating because copy and paste is free:
most of the changes here are internal-only, to make it easier to keep things synchronized between the 1.12.2 and 1.18+ versions. (no, i'm not supporting 1.16. i just don't care enough about the void between can-play-thaumcraft and can-haz-tall-worlds. besides, the last release worked fine there. mostly)
the singular actual player-facing feature: preemptive caching of off-plane world segments. if you're climbing a hill, or ascending stairs at a reasonable speed, the map should be much more prepared to give you continuous minimap bits without as much of the strobing as it realizes it needs to re-scan stale data.
fail states: super rapid vertical movement (creative flight, grappling hooks, jumping off a cliff) will tend to have much more dramatic tearing. high vertical movement combined with high horizontal can result in some weirdness. i can't do much for that. but on the bright side: normal usage of elytra is more horizontal than vertical, so it mostly copes fine in normal play, even with some rockets to boost.
the downside: the performance impact can be felt pretty notably, but in my testing i came to the conclusion you should be able to tune parameters in the config to get something satisfactory. let me know if the knobs are insufficient.
i'm calling this an actual release. huzzah.
edit: binary is actually attached as of 2021-12-22