Hi Bodhi_Dave,
Did a clean wipe and full reinstall on my mid-2014 MBP 15" with Nvidia GT 750M before 10.13.1 was available because it was just barely usable, I couldn't afford to take the risk to have it freeze on me while doing a presentation with a client. it was crashing too often. I also had weird partitionning since I had to let go of my bootcamp partition.
It went better as I only experienced freezes after waking it from sleep and reconnecting to my 4k screen after lunch break or long meetings without using it.
I updated to the .1 update, and still have those freezes.
Once it froze just as I started the Photo App.
I followed warp23's advice and checked reduced transparency. Now I have less freezes.
Also, having a 1080p external display at home and not a 4k like I have at the office, I can tell that the more strain there is on the graphics card, the sooner the freezes will occur.
I used to have daily freezes at the office before I reduced transparency and maybe once every 2 days at home.
I am really p****ed to hear warp23 recount of his talk with Apple support saying that there is no Global problem.
I did reset NVRAM and SMC just in case but come on...
Going through a full reinstall right now just means so much work and almost pain setting everything all up again just a month or so after I had to do it. And furthermore, without any warranty that it'll fix it !
I need to work not spend valuable work or family time fixing my darn high end (at least when purchased) pricey Mac computer's OS.
Sorry for the ranting, had to let it out.
Good luck to all.