That doesn't matter. GEMA is an old dusty piece of garbage and everything containing third party audio on Youtube is blocked by it in Germany. I don't approve of the regional licensing companies like Sony and Warner do, and these guys are saying that GEMA is a complete failure, so that should tell you something.
As for texture resolution, we're getting to the point that cards have a lot of memory. My card from five years ago has 640MB of memory, and my new one 2GB. High end Radeons have 3GB and NVIDIA 4GB. We have cheap cards out now with 1GB of memory for around 100$ or less. Don't be afraid to use more memory.
Just my opinion.
Another thing, the lighting could be a bit more contrasted, shadows should be a bit darker in that video for example.