Flashmodules on websites eating alot of ressources

As title says, I think flash is taking way too many ressources than it should.

I can have maybe 3 youtube tabs open or something like that, and it will lag alot switching tabs, working in general.

Also, watching some videos where the movement is fast, the person on the video will lag around, and not show it smoothly.

(Example. https://www.youtube.com/watch?v=j2AsDvFYrpM

That particular video itself is the problem.

In other words it is poorly encoded, I don’t think it has anything to do with flash.

I think it does, as it happens EVERY time I have more flash tabs.

How do I monitor the ressources?