I definitely do love SPAM, and now @sogalitno tells me about Chinese SPAM. Ooooh, wow, must go and find that oriental delicacy then.
The obligatory Monty Python link:
Found one flags in regards to tabs in opera..
Pause background tabs
Pause timers in background tabs after 5 minutes on desktop.
and this flag..
Throttle expensive background timers
Enables intervention to limit CPU usage of background timers to 1%
should help memory, cpu, & battery drainage..