Meaby change totaly to diferent browser i swaped firefox to vivaldi test it meaby you will like it.. at last which addon you use in fox?
this one https://www.mozilla.org/en-US/firefox/organizations/all/ or go palemoon/waterfox but dont cry rivers after switch firefox has NO alternative - not in engine, not in security*, not as portable**. * chrome/chromium security has improved in the last builds - it has "CF Guard" (CFG, windows protection) and dll injecting only when starting and verfied. **if another (real) portable then opera current webextensions mostly work as scripts in webpages, not in firefox directly. mayor changes. thats why tabmix plus or session manager dont have direct replacements, only some which replaces parts of it. features of those which changes firefox behavior or UI are not allowed!
Pretty sure Chrome has long since surpassed Firefox when it comes to both security and engine speed. Chrome has an optional Site Isolation now, for example. Wouldn't it be best to just stick with Firefox and wait for the addons to be updated to work with Quantum?
called "containers" in firefox. have fun waiting until you got black ^^ dont wait any longer, serious. concerning engines there is nothing to compare, V8 and upcoming V9 are not comparable to servo, but chrome eg uses firefox js-engine in parts, but mozilla now had improved now again and is faster than chrome.
Chrome has sandbox for years. Firefox added sandbox recently. Not to mention that Firefox sandbox, by design, does not restrict Firefox processes so much as Chrome's sandbox do. Chrome sandbox is really fine-grained and secure. Firefox sandbox is not restricting Firefox's processes as much as Chrome do. It is the price for flexibility and less memory usage Mozilla's engineers wanted.
Wisely designed, fine-grained in-app sandbox (with privilege dropping and separation) is much harder to bypass than outside sandbox. For example some Chrome processes call "DisallowWin32kSystemCalls", which significantly reduces attack surface. On the other hand browsing WWW with Firefox can be reasonably secure, if done properly.