I can not reproduce this with Sigil master at all. I will check with stock version 1.5.1. But from just looking at your timings the issue does not appear to be search speed at all and instead seems to be related to the time it takes to open a new chapter and scroll to that position?
Are your timings with Preview open and showing or hidden?
Last edited by KevinH; 04-14-2021 at 09:42 AM.
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