STABLE version -- 5.0.1002.354

[Admini]

Дело в том что открывая одни и теже закладки и процессы постоянно разные

There are processes for dynamically created <iframe>, so even the same web page may have different processes.
As ChromiumIQ said, it is more reasonable to use the browser's task manager(Shift+Esc by default) instead of the Windows task manager to measure browser memory.