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Katsunami · 06-22-2014, 10:28 AM

It is the first time I noticed this, because I've just upgraded my montior from my 7 year old 19 inch Eizo S1931 (1280x1024) to a 27 inch Eizo EV2736W (2560x1440).

Previously, I would run calibre full screen; on 1280x1024, there's not really any other option. On this new display, calibre can display a lot more information, even when running in a window. This is when I noticed some lag in updating the GUI, when resizing the window. Even selecting a book has a lag of about 0.5 seconds or so.

Maybe the following has something to do with it; maybe not. I'll mention it anyway.

Due to my poor eyesight I cannot read anything when the display is set at 100%. Therefore I set the custom DPI setting at 133%, which effectively gives me a 1920x1080 working area. Thus, I use the extra resolution and monitor size for sharpness and GUI size instead of more working space, compared to a 21-24" 1920x1080 display.

The relevant specifications of this old-ish computer are:

Intel Q8400 quad-core, 2.67 GHz
Windows 7 Professional 64-bit
8GB RAM (DDR2, 4 sticks)
nVidia 560Ti 1GB
64GB SSD

Is there a way to speed up the calibre user interface? It would be nice to have, but not really important. If it's just slow to redraw because QT behaves like that at a non-standard DPI setting, then it's just the way it is. Readability is more important to e than speed.

06-22-2014, 10:28 AM	#1
Katsunami Grand Sorcerer Posts: 6,111 Karma: 34000001 Join Date: Mar 2008 Device: KPW1, KA1	Calibre GUI is very slow to update It is the first time I noticed this, because I've just upgraded my montior from my 7 year old 19 inch Eizo S1931 (1280x1024) to a 27 inch Eizo EV2736W (2560x1440). Previously, I would run calibre full screen; on 1280x1024, there's not really any other option. On this new display, calibre can display a lot more information, even when running in a window. This is when I noticed some lag in updating the GUI, when resizing the window. Even selecting a book has a lag of about 0.5 seconds or so. Maybe the following has something to do with it; maybe not. I'll mention it anyway. Due to my poor eyesight I cannot read anything when the display is set at 100%. Therefore I set the custom DPI setting at 133%, which effectively gives me a 1920x1080 working area. Thus, I use the extra resolution and monitor size for sharpness and GUI size instead of more working space, compared to a 21-24" 1920x1080 display. The relevant specifications of this old-ish computer are: Intel Q8400 quad-core, 2.67 GHz Windows 7 Professional 64-bit 8GB RAM (DDR2, 4 sticks) nVidia 560Ti 1GB 64GB SSD Is there a way to speed up the calibre user interface? It would be nice to have, but not really important. If it's just slow to redraw because QT behaves like that at a non-standard DPI setting, then it's just the way it is. Readability is more important to e than speed. Last edited by Katsunami; 06-22-2014 at 10:31 AM.