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If this exists, I have been unable to get it working.
So on browsers like Firefox, you can middle click to scroll depending on the magnitude of the cursor relative to the middle click coordinate.
When flipping through about 10-20 pages on a 1000+page files, this would be a nice feature to have since manually scrolling is tedious, but using the main scroll bar is not easy since a few pixels translates to many pages given the large file size.

First of all, I have not found what you are looking for (middle-click scrolling).

An alternative might be the view as presentation. The settings for the presentation mode includes a time switch. In combination with a pleasant transition, this makes a good visual impression. By means of the keyboard or the mouse can be intervened meanwhile, if it goes times on a side too fast or too slowly.