Likewise EC, I fired up the 6K pre-made map instead of Navezgane, but it runs great on my high-end PC. Looks WAAAY better than the earlier Alphas and the color palette is much better (at least to my eye) and not so washed out. No shimmering so far on a pre-made at least and fighting and moving and crafting, etc. is all still good.
Nice job FunPimps, kudos to the Alte gang and all the newer folks for making such a stellar version. I am sure there are things you all want to fix or tweak, but for higher end hardware the game is a dream.
Sounds like some guys are having the usual issues, but I think some customizing will help with that.
Looking forward to trying random generation maps next.
Cheers!