Hello All.
One thing I suggest from time to time is consider resetting the PRAM and possibly the SMC on macs with the weird issues. For me, it makes a difference on speed. Bootup, internet page load time, restart, overall responsiveness - all snappier.
Research, and decide if it's something you may want to try. Let others know how it worked out for you. This is a simple thing to do before major surgery or just living with it.
As usual, if you don't back up your important files to at least two or three locations, you will eventually have that horrible feeling of irretrievably losing your stuff. Ask me how I know.
. It's to the point that I use a completely separate SSD drive to try new/upgraded software prior to going more permanent.