Yo've done it, man !!! I don't know how, but you've done it !
Best browser config so far. The only thing is Adblock, when i change the preferences list to EasyList +RoList, when opening KM, the CPU goes to 50% and stays about 3 secs, and RAM goes to 130-150 Mb. So i changed Adblock with Bluhell Firewall and now it's all good.
Love "Open in browser" , "Advanced management"