(In reply to Rares Doghi from comment #1)
Hi Dave, I tried to reproduce this issue on Ubuntu 18.04 as well as Windows but without any success my CPU won't go over 50% with or without the Add-on.
The cpu usage is fine, my memory gets consumed to the point where there is only 130M left and virtual memory is also consumed in large quantities. It may be that a machine with more than 4G ram may not be affected.
This is what top normally produces, I have 5 tabs open and non of the tabs are cdn rich and won't cause the freeze:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2592 davepl 20 0 3429768 765484 123456 S 8.970 19.37 2:58.36 firefox
3011 davepl 20 0 2156516 439596 80680 S 8.638 11.12 1:07.34 Web Content
2745 davepl 20 0 2233660 519840 116500 S 8.306 13.15 2:22.69 Web Content
2645 davepl 20 0 2228540 485076 85204 S 7.641 12.27 2:22.39 Web Content
I have just recovered from a freeze, this time there was a core dump.
As soon as I visited https://www.thesun.co.uk/ which is advert and cdn rich I had a freeze, unfortunately my system is so slow I couldn't run top to give a comparison, I'll enable "You Tube Download Button" again and run top in the virtual console and take a picture with my phone.
Where can I find the profile that was recorded before I had to kill firefox?