Currently answers with equal score are ordered randomly on each page request. I understand that this is intended to make voting fairer. But that the order changes each time you refresh the page is a bit annoying.
What I'd prefer is an ordering that keeps the fairness, but doesn't change all the time. My answer to this is to combine the user id and the answer id as secondary score criterion.
When looking at a single page this is practically indistinguishable from the current sort order. The difference only become apparent if you view the same page multiple times. My suggestion is similar to seeding the PRNG with the userid instead of the time, except that it has better stability properties than that.
One simple implementation could be:
With an effective ordering of