I do a lot of scrolling in Safari. I often end up hitting space bar to jump across just the right sized blocks. I just looked into it now and I wonder, is it the exact same action as page down? Anyhow. I have a sort of vision problem and the aggressive animation in the scrolling action is quite overwhelming. Is there any workaround for disabling it so hitting space bar or pg up/down would still scroll that perfect amount of the page, but bypass that whole visual effect?
On another note, even just knowing what the numeric value of that perfect step actually is, might be helpful in coming up with something. If it gets assigned by monitor size, being a fluid concept, that's another thing of course.