[ksec]

I am assuming it grind to a halt because it is CPU bound and not Memory bound? In that case the premises of CPU optimisations are not important would be, inaccurate?

In reality it is complicated when we have extra CPU cycle to burn developers tends to put fancy new things. Which is basically what andy giveth bill taketh away.

[codedokode]

Probably "everything stops" because tabs consume too much memory and OS starts swapping data to disk.

[dwiel]

It's because she runs out of memory and it starts swapping, I check the task monitor or whatever it is called in chrome. Some of the AdBlock extensions are taking up ram as well.