Oh boy, I saw this thread title, and I can't relate what so ever. Yes there some periodic hangs here or there, but hardly a deal breaker.
I did a quick flight from Flytampa KLAS to Orbx KSAN over TE So Cal in the NGX using IFR ATC planning with all sliders to the right at 4K max tex res in 4K with EA on and the experience was short of astounding and incredible. I don't know what LM reworked under the hood but my experience has never been better on this platform.
Are there some hang ups here or there? Sure, but I was under the impression LM is aware and a hotfix is imminent.