Since 1.6 patch my ret slides off the screen or just plain dissapears when I turbo,as soon as I release turbo it comes back

It is slao very jumpy when it is ther,before patch it was perfectly smooth

That's because when you turbo, the leadoff calculation algorithms become unsolvable because of the speed at which you are going. The interface has also been significantly redesigned since 1.6 and isn't smoothly interpolated.