SERVER-123514 introduced NAN value normalization for the result comparison. Unfortunately, the normalization takes a lot of time sometimes doubling the total test runtime. We can try decreasing normalization time with some changes to the normalization method.

Some ideas:

• modify the result in-place instead of returning a deep copy
• pre-filtering on /[+-]NAN/ before normalization
• make the regular expression non-capturing, i.e., /^[+-]?nan(?:(ind))?$/i
• push this normalization after tryFastPathComparison()
• ...