I haven't noticed any Window Server crashes, but to be honest my MBP has only been on High Sierra for about a week and a half now, and the profile I'm using is literally days old. It's also not my main system, so it doesn't get as much use.
I use DisplayCAL/Argyll with an Eye One Display 2 for display calibration. The sad thing is that I had to create two profiles from it. The first/original is a more accurate profile (which is also more sophisticated) but runs into another Apple bug that completely crushes blacks in Preview, Quick View, etc. The second profile is a more simplistic matrix version which gets around that Apple bug, but has trouble with Mail using Intel GPU. Yet the more sophisticated original works fine in Mail. Can't win, go figure. 😉
Hopefully their display team looks into some of these issues. Profile support used to be strong, but seems to be slipping IMO.