I think the amount of people that would see the error either way would be the same, assuming constant fix time and traffic. This means lowering the TTL as much

I think the amount of people that would see the error either way would be the same, assuming constant fix time and traffic. This means lowering the TTL as much as possible should be the right solution, because those affected will only have the issue for as long as the fix takes (hopefully less than 1hr) whereas if it is kept at 1hr those affected by the error will have it for an entire hour. Disclaimer I'm not OP