Which browser are you using? (Internet Explorer? Edge? Firefox? Chrome? Opera? Avant? Something else?)
Have you tried a different browser?
And, probably most importantly (given that it's the ads on this site which some browsers seem not to like), have you got that-which-shall-not-be-named-here installed?
Having encountered constant crashing on AB I now use Badlock browser(as we're discouraged from such activities, move the B to between the D and L) which ought to solve your issues.