When I select an object, I type an x, y, scale or alpha in "Object Properties" tab and hit Enter(or not, doesn't matter), then I go to another frame. When I return back to frame where I typed x,y or other parameters, everything remains the same as like I haven't made any changes in that frame. I get a little bit chunky animations because of that.
Windows 8.1 64 bit, Core i7 2,4 Ghz, 16GB ram