Archer C50 v6 status question

i had already bought some archer c50 and was happy to find that v4 at least is supported.
But most of mine (maybe 5) are v6. And i have got them to run openwrt with the experimental build from @Marssl . But with that build wifi does not run stable, so i mostly reverted (use 1 as managed switch under ow)

So i was wondering if things have progressed? Can i possibly send someone a device (in eu).
Or are there some concrete compiling instructions i could try, i have both imagebuilder and compilation set up.