@joost_mineur are any of these 
the posts you were remembering?
(2020-02-10) https://community.coda.io/t/psa-replace-now-with-a-lower-resolution-real-time-clock-for-heavy-formulas/13759
(2020-12-11) https://community.coda.io/t/how-to-avoid-using-now-to-reduce-the-calculation-time-of-a-doc-to-check-the-hour/19998/4
(2021-08-17) https://community.coda.io/t/launched-new-features-to-manage-your-structured-data-with-precision-and-ease/24929/15
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