There are many grind spots, find an empty one. Have not heard of any Skyreach nerfs, but I also never really ran that place, being at CP1175, there is no need. Dolmens can be good, but you have to tag as many mobs as you can, not just be there for the bosses. 2/3 the exp comes from the dolmen mobs.
I never parsed the ultimate end all be all of exp grinds. They are roughly the same in exp per hour. Sure you can find something that seems marginally better, but guess what, there will be a crowd there too. So, best advice, find some spot or series of activities that you can do over and over without going mental. That will be your best grind. The hardest grinds are the ones that are no fun.