Hay, i have a small scene but i have used a lot of materials and decals, i get this message showing in red "Texture Streaming Pool Over 800 MB, is there a way to fix this i haven’t even started with the real big levels yet.

Have you built the lighting in your scene? You can try increasing your pool memory size by entering this in the console comand: r.streaming.poolsize 2000 depending on the available VRAM of the GPU.