Ain't gonna lie, this is a fact, but you could use:
OneTab: to save tabs that you need them for further research, reading, whatever, but you don't have to leave them opened. They will be saved in a special "bookmark" from this extension.
The Great Suspender: Shuts down the tab process to avoid using memory while it's not required. You can set the time or whatever.
Native Lazy Tabs: Automatically discards all tabs at startup, before they load, reducing memory footprint and unnecessary bandwidth usage.
And obviously, turn off background process from Chrome. This definitely will boost up your Chrome experience.