Panning seems way too laggy

[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?

[xnview]

how to reproduce?

[WhiteGuy]

Zoom in on a large image and pan. Only happens on my 3840×1200 monitor.

[xnview]

could you post some screenshots?

[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]

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)

[xnview]

It does NOT happen on built-in retina display.

always on external screen?

[YangombiUmpakati]

It does NOT happen on built-in retina display.

always on external screen?

yes, always on external screen.