He's dead, Jim!
Just isn't as funny as it used to be.
By the way, Chromium tells me:
Boo... You have no extensions :-( Want to browse the gallery
Something that has helped: Open the task manager (shift+esc) and just click the
End process button until you've closed everything but
GPU Process (these two can't be closed). Now go back to the websites that were crashing and try again.
After killing all of your tabs in this way, you can go back and reload pages with
F5 on an as-needed basis. This is the way web browsers should work anyway -- pages release resources and hibernate when not in use.
Long story short, I think Chromium has moved away from its original sandbox-per-page architecture, so now there is a great-deal of interdependence between running web pages -- and this results in the infamous sad-tab, which tends to come in bunches.
It's hard to keep a web-browser running great over time. I hate to say it (or do it), but sometimes you just have to throw up your hands and go back to Firefox.