Can you slow down your pace at work and do things more thoroughly even though it might create some problems for you (less than stellar review at the of the year

Can you slow down your pace at work and do things more thoroughly even though it might create some problems for you (less than stellar review at the of the year, having to admit you're simply slow, missing some deadline but not by much; or something like that)? If so, I think you'd be surprised by how much room you have to "wing it" and make things work at your own terms. It might not even come to that if your understanding is improving (because you're spending more time at work digging deep into topics) and you're able to propose better solutions.