Assuming this is with the exact same epub, nothing much related to speed has really changed between those two versions. And in fact 1.5.1 is, if anything, just a bit faster.
My guess is you have a anti-virus program that is set to scan every file created in tmp and it sees Sigil-1.4.3 as safe and Sigil-1.5.1 as unsafe and is scanning every file is opens or tries to load which hugely slows down Sigil.
If there is some way of telling your anti-virus program that Sigil-1.5.1 is safe and should be left alone, you could try that.
Better yet, as a test disconnect your computer from the internet briefly and reboot with any added anti-virus disabled, and the do the speed test. You should see that for the exact same epub, Sigil-1.5.1 is slightly faster.
Last edited by KevinH; 04-07-2021 at 02:30 PM.
|