On the render to texture - No matter how dim I make the lights in my scene, or which kind of material I use, the render to texture looks like I've aimed a massive, super powered spotlight at my object, leaving textures overbright, (or just full on white), and washed out, with a yellow hue. The rendered/baked texture does not seem to have ANY relation to the rendered scene anymore. Completely different results.
On the lighting - All lights using Arnold are colouring my scenes with a yellow light both on my scene renders and render to texture. I've tried various settings and made sure all of the colours are white on the lights, also the environment background. Still yellow!