XnView Software

I was able to confirm the behavior as expected by setting the value of macWheelDelay in xnview.ini to "false" with the hints written here.

Thank you zecanard and the author for your support.

Hello.

Thank you for distributing Ver1.3.1.
I tried to verify this matter.
It certainly works better than before Ver1.3.0 when assigning the previous/next file to the mouse wheel.
But it's still slower than, doing the same thing with the left/right keys on the keyboard for example.
The mouse I'm ...

Hello.
The same problem occurs in my Mac.
I'm using a Logitech M575 trackball mouse.
I was annoyed by this problem for a long time and refrained from using it,
I read this topic and wrote about it.
This problem did not occur until at least version 0.84.
I remember that it started to occur around 0 ...