[Feature] Remove black fade-in transtition on duplicates preview switching

[Atedos]

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request.

• Yes

The feature

Remove or give an option to disable black fade-in on duplicates preview switching.
It distracts and makes harder to see the difference between the photos, especially of similar size/quality.
Would be nice to make the switch itself instant, even if with a bit of delay, or some kind of preload when entering preview mode, so there is no kind of transition.

Platform

• Server
• Web
• Mobile