1 - Why such blind trust in Russians ? Chinese telemetry removed , russian added , why not ? xD . You may as well install Antivirus software from KGB officer Kaspersky , just search for "Kaspersky , KGB" , you'll get plenty of results ...
Have you ever checked the file yourself ? I've just opened it and I see they have LEFT a ton of Chinese telemetry , and it is NOT enough just to patch the chrome.dll . The executable and child are needed to be patched too !
Offsets may differ , due to the various versions . This one is from 12 , but 13 has them too (even "patched" by the russians)
AT OFFSET chrome.dll 2B934B5 DNS resolver (chinese IP 101.226.4.6 )
AT OFFSET chrome_child.dll 3C0280D DNS resolver (chinese IP 101.226.4.6 )
2 - Regarding RAM , just use this flag --process-per-site . It will reduce the usage of RAM and each site will run in one process.
P.S.
It's kind of one the first rules of internet , do not trust anyone.