Google search engine never seems to find the same results as Bing and I cannot seem to lock Bing in as my default in Google Chrome.
That is because both are separate search engines, made by different companies and therefore incompatible.
Notice how much of your resources FF is using even though it is not in use, many plug-ins have a less than desirable affect I`m afraid, entirely up to yourself but I cannot see the point of having more than one browser, you only have 4GB of RAM some of which is used to support the R5 graphics and the more tabs and browsers that you have installed and/or running the more your system resources will be used up.