I was experiencing fairly frequent irrecoverable freezes. SSH as root would not trigger a reboot etc.
I have 3 external displays in addition to the one on my 2017MBP (max config)
A lot of ppl are citing the GPU/Metal2 as the culprit and I absolutely agree that seems to be related
Most of the time, the lock-ups occurred while editing in Premiere Pro CC and AfterEffects
However
With High Sierra came a number of other minor bugs that I sought to remedy and I'm not entirely sure, but I may have inadvertently stopped the GPU glitch at the same time. It's been 4 days since the system froze and it ceased coincidentally with the following:
• ran drive repair from recovery (to fix all the damage from the last few panics)
• updated all drivers
• safe booted, logged in to both root account & user account during safe boot (my root login is enabled)
-waited until all drive activity dropped to zero
• reset NVRAM
• turned off automatic graphics switching
• rebuilt LaunchServices
• rebuilt DYLD's shared cache
• rebuilt XPC cache
• rebuilt CoreDuet database
• rebuilt Mac Help
• rebooted twice
it's been 4 days of serious video and audio production/rendering across 4 displays and mysteriously no lockups
I'll report back as soon as one happens again