If you use the PageUp/PageDown keys to navigate through a PDF document with the new Okular, it now slow scrolls. This makes it very difficult to quickly page through a document to get to where you want (some datasheets are +500 pages). Normally I would just hold the PageDown and it would fly through the document, now its about one page per sec which is hopless
An option to speedup scrolling is holding the ‘Shift’ key while pressing Page Up/Down.