Panning seems way too laggy

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WhiteGuy
Posts: 18
Joined: Sat Mar 18, 2023 9:13 pm

Panning seems way too laggy

Post by WhiteGuy »

When i pan when zoomed in, the program becomes ridiculously slow and laggy.

It's sorta like the hand is lagging behind the image while panning.

Anyone has the same issue?
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xnview
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Location: France

Re: Panning seems way too laggy

Post by xnview »

how to reproduce?
Pierre.
WhiteGuy
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Joined: Sat Mar 18, 2023 9:13 pm

Re: Panning seems way too laggy

Post by WhiteGuy »

Zoom in on a large image and pan. Only happens on my 3840×1200 monitor.
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xnview
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Re: Panning seems way too laggy

Post by xnview »

could you post some screenshots?
Pierre.
YangombiUmpakati
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Joined: Wed Mar 22, 2023 5:41 pm

Re: Panning seems way too laggy

Post by YangombiUmpakati »

I can confirm the same behaviour, XnView is extremely laggy, when panning zoomed large image (actually not that large, 10MPx).

I can also confirm, that it happens only on large 4K monitor, connected to my Mac M1 laptop.

It does NOT happen on built-in retina display.

There is really nothing to screenshot, just open a 2MB jpeg file, zoom in 3 or 4 times and then panning becomes extremely slow, both keyboard panning and by mouse in the small image.

Other than this the software is just amazing.
YangombiUmpakati
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Joined: Wed Mar 22, 2023 5:41 pm

Re: Panning seems way too laggy

Post by YangombiUmpakati »

Okay, I just verified, that the image doesn't even have to be large, it just has to be zoomed to 400% and more... (start being laggy but still usable around 250% zoom).


XnView MP MacOSX
Version 1.4.3 64bits (Feb 25 2023)
(but it is around since I have been using XnView - for about a year ago, when I transitioned to MacOS)
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xnview
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Re: Panning seems way too laggy

Post by xnview »

YangombiUmpakati wrote: Wed Mar 22, 2023 5:46 pm It does NOT happen on built-in retina display.
always on external screen?
Pierre.
YangombiUmpakati
Posts: 4
Joined: Wed Mar 22, 2023 5:41 pm

Re: Panning seems way too laggy

Post by YangombiUmpakati »

xnview wrote: Thu Mar 23, 2023 12:33 pm
YangombiUmpakati wrote: Wed Mar 22, 2023 5:46 pm It does NOT happen on built-in retina display.
always on external screen?
yes, always on external screen. 
YangombiUmpakati
Posts: 4
Joined: Wed Mar 22, 2023 5:41 pm

Re: Panning seems way too laggy

Post by YangombiUmpakati »

I can confirm this still is the case, even on powerful M3 Max processor.