Moving frame from point A to point B in certain time?

I have frame1 and its Size. X.Offset is 116 pixels, and i also have frame2 and it's Size.X.Offset is 1 pixel, how would i move frame2 from position 0 to 116pixels on X scale and exactly in one second smoothly not just like teleporting from point A to B but smoothly and in 1 second?

for i = 0,116 do Slider.Position = UDim2.new(0,i,0,0) wait() end

I know your'e gonna say wait() has minimum waitTime of about 0,03, and i should use RenderStepped, but how would i implement RenderStepped, just give an example modified code please with the GUI number's so i just know how to calculate this (position) next time on my own,?

Edit:I can't use TweenPosition, because its too slow.

Thanks.