I still think that Windows 10 should include the Windows Photo Viewer on fresh installation instead of going through a registry hack just to get that back. Then again, the Photo Gallery program that comes with the Windows Essentials 2012 pack opens way faster than the Photos app even though both of them offers the same features and function. On the other hand, the Photos app has more features which includes galleries and editors so maybe that's why it opens slower. The Windows Photo Viewer is simply a viewer that also allows you to print photos from it if needed.

The app also eats up a lot of RAM whenever I open it and will sometimes run in the background so I have to end task it whenever I close the app which I tend to open by accident. Pretty much my experience whenever I open the Photos app in my 8-year-old laptop which is a non-SSD 3rd gen Intel i3. I can't understand how it's possible that nobody speaks about something as obnoxious, as this Photo thing is, I think, by far the most obvious one (regarding performance). Why could I open a picture in no time with my prehistoric Win 95 PC but can't with another insanely more powerful (even same resolution pictures)? Sure, IrFanView, ImageGlass and so on are there, but It isn't about using another program, it's about having software which works properly and not God-knows-which more features that hoard 100x more resources than they should.

Sure, the devices aren't top notch, but it isn't just the most shameless planned obsolescence, but also a waste of resources: whenever I buy a new computer, I want to make more and faster things, not the same with 100x more computing effort. Has anybody tried 'Photos' app in something like a non-SSD 6th gen Intel i5 PC? It's really grotesque how you have a black square for MINUTES before the pictures load while if tweaking Windows in order to use the 'Windows Photo Viewer', they open instantly. This happenned while formatting the penultimate 'old' laptop here at the company, but also happenned with ALL the previous migrations to Win10 back when we decided to get rid of the Win7s.

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