Normal to Height HQ node producing extra "noise"

[rwnet]

Is there any way to remove the extra noise that is showing up after using the Normal to Height HQ node?
The noise is present even when I use a flat, grey texture for the normal map.

[Vincent Gault]

Hey, I can't reproduce this issue 
Could you send us the input map you used to get this result? where you in 16 bits?

[rwnet]

Hi there,

I will try tomorrow at work too - all I did was just Uniform Color (Grey) then to Normal Node and then to Normal to Height HQ - and then export as Height map. When you check in Photoshop the texture has two different colors of the pixels - 127 and 128 which produce an unwanted noise.
I will let you know tomorrow if I have the same problem at work.
And yes I am working in 16 bits.

[rwnet]

So I did some more test and I have noticed that it doesn't happen when I use PNG format. When I use BMP format then I get the "noisy" output.
It is not a big deal as there is a work around it