It does not help that I have one of the "dead dGPU" 2010 series, and with every new release I dread more and more that gfx won't be able to lock the system in "integrated only" mode.
I’m not an “Apple are doomed”-er but this is the poorest Apple OS release since the black screen of death that plagued iOS8.
You seem to generally get about 3 years of use from an iOS device before the CPU can’t really keep up with the OS updates. I couldn’t recommend upgrading an iPhone 6 to iOS 11 as my wife’s 6 Plus has basically become unusable.
Maybe part of the problem is that no-one in Cupertino will be using a 3-4 year old iPhone or a 2012 Mac on a daily basis?
[1] https://blog.macsales.com/42466-a-note-on-high-sierra-compat...