The idea of changing the OS implementation in order to suit an internet browser is hilarious at least. The browsers developers are not interested in proper implementation and inbreed of browser with OS internals, no! All that matters is to make something work for the browser itself.
I am not able to understand why a simple application like mpv for example is able to play videos and streams at high resolutions with good performance, but a "browser" needs 10 times the CPU cores and memory and it still does it wrong enough to annoy users. So use what you have. I enabled mfs file system. See the list for details.