Enabling and disabling the high-quality zoom is inside the settings, but there's no possibility to assign a key to it to enable or disable it while viewing an image.
Also, I'd like to have another option to automatically disable high-quality zoom once a certain zoom threshold has been reached, e.g. 800%. When you're zooming that much, you might want to examine pixel details which become blurry due to the high-quality zoom.
Any of the two suggestions would do for me, both would be absolutely great.
Enhancement of high-quality zoom options
Moderators: XnTriq, helmut, xnview