Yes, check :-) In the end, it´s the only option if you need > 4 GB per tab, as Chrome simply cannot handle this. The 64 bit versions (obviously not possible for the 32 bit versions) of Firefox (and Lawlietfox) can, I´ve had one tab using ~40GB there (during a test) without any issues.
You said: "Mayber there are special Browser Versions for good EA Studio Performance."
There aren´t, I´ve checked them all. You don´t have much variations in the JS engines, it´s either the one from Chromium (Chrome) called V8, or the one from Firefox. There are no other independent JS engines out there that could run EA Studio and all other browsers either use V8 (and are mostly spin-offs of Chromium, just customized) or ise Firefox´s JS engine within spin-offs of the Firefox browser itself (like Lawlietfox). Comparing all the custom builds of Chromium and Firefox, it really comes down to either the builds from https://chromium.woolyss.com/ for Chromium which are the fastest (and faster than stock Chrome) or Lawlietfox for all the Firefox builds out there.