UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/61.0.3163.79 Chrome/61.0.3163.79 Safari/537.36

Steps to reproduce the problem:
1. Open 20-30 tabs.
2. Have 2 or 3gb of ram.
3. 

What is the expected behavior?
Leave on overnight, memory leak from chromium will cause lockup of entire system and require reset button action.

What went wrong?
Losing my tabs from the previous session, unable to recover, as well as losing any open work that might be on the desktop.

Did this work before? No 

Chrome version: 61.0.3163.79  Channel: n/a
OS Version: 
Flash Version: 

Firefox doesn't do this. It can make the system a little slow with a large number of open tabs, but it never causes freezes. It is verifiably related to chromium because this never happens unless I have chrom open. I can get back a little memory if the system starts to slow down by loading another program and closing it, keeping the system alive and not frozen. This is a preventative measure but if you let chromium have free reign too long you will eventually be unable to do anything.

Supposing you open 20-30 tabs and are working in all of them, all of them are loaded and displaying data, the system will work fine, and ram usage is not quite at the limit. There is no visible sign of system slow down. Give 1-2 hours and it will start slowing down. Leave it alone completely after laoding 20-30 tabs from a fresh reboot, and it will start slowing down in the same period. Leave alone long enough and it will lock the system up.