Dear Blender Community,
Several weeks ago I suddenly experienced difficulty when rendering on my GPU. Whereas before the renders looked just like the CPU renders as they are supposed to, my GPU renders now had a gray overlay or mist, if you will, in them. This happens in every scenes, but I will illustrate the difference with pictures from the following test scene: A rendered image using CPU rendering (looking normal)
For the GPU render I used OpenCL rendering, thus using an AMD graphics card. The odd thing is that when I used GPU rendering in the viewport rendering the preview looked perfectly fine without any gray overlay. I've already tried tweaking many settings, though nothing made any difference. Except rendering with a very low sampling amount, like 5, made it so you have a very ugly grainy image though with very little of the gray overlay.
I really hope someone might have a solution for this problem so I will again be able to render scenes with shorter render time. If any more information is required feel free to asked and thank you very much in advance.