on the subject of ram timings could someone explain this to me and how to do it or point me in the right direction.
Well, you can try out
this program which can fiddle with the RAM timings. Before you even try that though, look in the options menu of your emulators, as many of them already have this ability built in (older ones likes Hu6280 don't).
Like overclocking though, there's no guarantee that it'll work. Some systems can handle the faster speed, and others will simply crash. Give it a try. If it works, then enable them whenever you can. Works fine for me though.
--Zero