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betelguese · 04-27-2024, 09:28 PM

Hi all, I tried searching the web for a solution to no aid. Issue is that EPUB files (an ebook file format) take a very long time to open, and even after opened, browsing pages inside the epub is slow. It does not matter if I open the book with Calibre or SumatraPDF, I even tried different extensions inside Firefox or Edge, it's always slow, sometimes taking up to 2 or 3 minutes to open, and SumatraPDF sometimes not even opening and staying in task manager as a high CPU process forcing me to terminate it. Disabling Windows Defender is of no help and changing the Graphics Performance preference (GPU assisted or disabled) does not fix it. I'm using a Dell XPS Windows 10 laptop. Thanks for any hint.

04-27-2024, 09:28 PM	#1
betelguese Enthusiast Posts: 44 Karma: 10 Join Date: Nov 2010 Device: none	EPUB files take long time to open Hi all, I tried searching the web for a solution to no aid. Issue is that EPUB files (an ebook file format) take a very long time to open, and even after opened, browsing pages inside the epub is slow. It does not matter if I open the book with Calibre or SumatraPDF, I even tried different extensions inside Firefox or Edge, it's always slow, sometimes taking up to 2 or 3 minutes to open, and SumatraPDF sometimes not even opening and staying in task manager as a high CPU process forcing me to terminate it. Disabling Windows Defender is of no help and changing the Graphics Performance preference (GPU assisted or disabled) does not fix it. I'm using a Dell XPS Windows 10 laptop. Thanks for any hint.