I've been using Arch Linux mostly, with the 4.18 and more recently 4.19 kernels. As explained in another post, I've done extensive trial & error to isolate the issue.
I understand that it's just a single data point, and other people have more positive experiences. My intention was not to find a solution here on HN, but OP asked for experience reports so I gave mine.
Using Arch, and such recent kernels, and having isolated the issue, you should report it upstream. Otherwise it sounds like you have the time and preference to report negative experiences on HN rather than see the problem get fixed.
I understand that it's just a single data point, and other people have more positive experiences. My intention was not to find a solution here on HN, but OP asked for experience reports so I gave mine.