The beginning of the Max Texture Size video (in the cockpit) looked really dark to me on my laptop. I could not really tell any difference between all the textures sizes. The second part, however, was perfect - showing the exterior fuselage texture differences was amazing.
Do you have plans to explain in more depth (maybe with diagrams or animation along with in-game footage) lag/pure/lead pursuit, to make it more clear what is accomplished and why you'd choose one over another? (Or is it just and advertisement for seeking out an in-game trainer?

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When showing the differences between a toggled setting (like in the environment mapping video), the toggling of the setting might be more obvious if you changed the color of the "enabled/disabled" text...perhaps red for disabled and white (or green) for enabled.