I think you’re referring not to the eye fatigue as in the physical sense, it’s more like you’re seen the animation so much you can’t even judge if it’s looking good or not. Typically as you say you would give it a day and then look at it with fresh eyes, but when the deadline is close, the client says this needs to be done by yesterday, then you have no choice but to rush it. Usually you have to hand over the job with a result you don’t like because the client was bad at managing times and that’s like 99.9% of the clients sadly. That’s why most people can’t really but professional client paying jobs on their resume, the results tend to be a disaster and something you’re not proud of.
What I have ended up doing is, after I hand over the work, and I’m like here you go client, have at it, enjoy your undercooked work, which is all crude and yucky because of you, so after all that is set and done, I go back to work on it and spend the necessary amount of time to polish it and make it something I can call a good work so I can actually use on my portfolio.
