I'd like to thank Hopkirk who suggested I might try Brave instead of Chrome. AB a lot faster now. I was so frustrated with it keep sticking and freezing etc. So thanks once again Hopkirk!
Fans of Firefox might like to try it's super-fast lightweight little brother, K-Meleon. It's what I use on my (poorly-resourced) netbook and everything simply whizzes onto the screen. (Even AB!!!):
http://kmeleonbrowser.org/