I'm running into this issue with virtual scrolling and the whole page scrolling.
I haven't found a solution, but have found ways to alleviate the issue. Bigger pageSize and smaller height will help a lot. I also find that touch on the latest Chrome browser tends to run into the issue a lot, whereas other browsers don't seem to have much of a problem.
I created this test page to show how the whole page scrolls when attempting to scroll up and down in the grid: http://runner.telerik.io/fullscreen/AZOxO/2
If you view this on Chrome with a touch screen, the problem is really prominent. Probably because "flick" scroll can be so much faster than a mousewheel. Not sure why it appears that the other browsers handle it just fine. Maybe it is a difference in how touch events are handled across browsers. It is also possible Chrome is so much smoother of an experience it can scroll faster.