RTEXTURESSTREAMINGONLYVIDEO

r_TexturesStreamingOnlyVideo

Don't store system memory copy of texture. Applicable only for PC and PS3.
On Xenon it's on[1] by default and cannot be changed.
Usage: r_TexturesStreamingOnlyVideo [0/1]
Default is 0 (off) for PC and PS3, 1(on always) for XBox 360.