First off, good move disabeling the AVG toolbar (see here
), but I recommend you to completely remove it (see here
When I start my browser, it starts at around 6.000K (this will be different for you), and the longer you have your browser running and actively use it, the more memory it will be using, and so, it will cause the freezes and slowness (using multiple extensions will also greatly bump it up).
I normally start getting freezes and slowness when my browser is using around 500.000k, but this will be different for you, as you are using a different browser and I have 2GB more memory then you.
Chrome treats each tab as a different process, so it's completely normal to see multiple entries there.
Hmm, the way you describe it, everything should
be fine. The only thing I can think of for you to try, is to reinstall chrome to see if the problem stays.
Good luck and keep us posted,