Scanning through photos on OneDrive on any platform or the web is a nightmare. Especially in my cameraroll. It takes forever to preview the images and find the ones I'm looking for. Theres no "jump to date" or anything so right now I can barely go back and look for anything.
i want this
Sounds like you are in need of a faster internet connection. I break mine up into Albums of about 500-1000 and they load just fine. If you put all your pictures in one folder I could see where that could be a problem. I would make additional folders and move them to new folders. If you have a slower connection than limit the size of the folder to a few hundred images. Just a friendly suggestion.