* Effectively can't play YouTube videos at all if the browser gets even just a wee bit busy (say, 30 tabs or so, including the usual portion of busy news sites). By "not at all" I mean the output starts getting so shoppy (and the controls so unresponsive) that it's just not worth the bother. By contrast my 2013-2016 Airs could do on the order of 50+ fully loaded YT tabs without much sign of strain (beyond starting to get a bit slow at the controls).
* While we're at it -- even standalone audio files are dodgy (if the environment is just a bit loaded). It's like the audio interface itself is perpetually hosed / overloaded.
* This despite a 2x upgrade in ram, and 4x upgrade in SSD space that I thought would take care of most of my performance issues.
* My UX experience was generally consistent on 2010-2016 models. That is, everything you hovered over / clicked / dragged behaved "the way a mac should" -- without having to even think about it. But with the 2019 model (Catalina) it seems they have to "improve" a lot of these default behaviors, which took weeks of trial and error to figure out (some of which I still am figuring out).
* It freezes up (requiring reboot) way more than it should (and correspondingly seems less tolerant of high browser loads). It's never a great experience when a laptop freezes up to to high load (which is of course perfectly avoidable). But I had to push my 2013-2016 really far to get it into the same level of instability. Basically it seems it can take only 1/4 the load of my earlier models.
* USB-C (which is just plain dodgy, and there's only one free slot. Can anyone explain what they were thinking with that?)
* Other stuff I'm probably too burned out by my overall experience with this thing to bring to the foreground of consciousness.
The only problem is - I'm still basically addicted to Macs (and have had consistently less than happy experience with Linux-based desktops over the years). Largely due to the overall UX, screen + audio quality (along with lightness and thinness). And (when the used to be reliable) their stability and low overall maintenance footprint.
With that said - is there any current offering from Apple that's at least reasonably stable (particularly in regard to browser load and audio issues)?
Or if not - what open source notebook offerings are people using these days (that are reasonably decent in terms of screen quality and overall responsiveness)?