I noticed the Corsair crash too.. Those services aren't exactly crucial - just lighting effects / monitoring for the AIO cooler. I've uninstalled those so that all of the associated services have been removed (there were four of them in total). No difference. Ironically, I found a running thread on Corsairs forum detailing users complaining about that issue as well!
I think i'll have a look at an older driver for the 5700. I'm also going to run the Windows 10 Decrapifier script that get's rid of all the scheduled task and bundled software bloat. That's the only other major difference between the new system and the old one. Fwiw, the old one was running the same GPU, (literally, I took it out of the old machine and put it in the new one), so I'm puzzled why all of a sudden that's causing a problem.. saying that, I'm well aware of how temperamental AMD drivers can be.
Hey ho.. listen, I do appreciate your help and time with this. If it really comes to it, I guess I'll just have to play something else! Let me know if you have any ideas and if I find anything that fixes it, I'll update this post (even if it means necro'ing it some time in the future!)
Cheers.