I was having a lot of issues on all betas of High Sierra (including the current GM candidate)—things were slow, choppy, and unstable across the OS and in all apps—even after fresh installs of each beta. I also had an issue where the OS would force me to verify every large file (especially videos) when I opened them, resulting in a minutes-long delay each time. This really messed up my workflow.
I Googled around and found that disabling Gatekeeper could help with the verification bug. But it also completely solved all speed and battery issues I had, and High Sierra is now screaming fast. Just note that the following command completely disables Gatekeeper and related processes, so be aware of the risks that can bring.
But if you need your system to be more responsive until these kinks are worked out, it's a good option. Just enter it into Terminal and restart.
sudo spctl --master-disable
To undo, enter this command and restart
sudo spctl --master-enable
I Googled around and found that disabling Gatekeeper could help with the verification bug. But it also completely solved all speed and battery issues I had, and High Sierra is now screaming fast. Just note that the following command completely disables Gatekeeper and related processes, so be aware of the risks that can bring.
But if you need your system to be more responsive until these kinks are worked out, it's a good option. Just enter it into Terminal and restart.
sudo spctl --master-disable
To undo, enter this command and restart
sudo spctl --master-enable