This is the full Guide, free and will fix your browser on any device you have, this is a general fix so you are on the right way to fix it.
I am a developer and I saw many discussions on social networks about Safari browsers crushing for no reason and after I inspected the software I saw the issue and I found a partial fix. This fix works just until you close the browser but.. you can fix it again and again when you want to reopen the safari browser.
SOLVED Safari Browser Crash FIX just partial but it works. Enjoy !