切换场景时经常是一片蓝色是怎么回事，显卡是GTX460，

logxing

使用了cfg文件，但是不知道一片蓝色和哪个参数有关。或者是什么别的原因？
其实使用cfg文件的主要目的是解决贴图延迟，别的感觉到不明显。贴图延迟又是和哪个参数有关？
请帮忙，谢谢。

seta com_videoRam "1024"
seta com_allowconsole "1"
seta com_skipIntroVideo "1"
seta com_maxfps "60"
seta image_anisotropy "16"
seta image_usecompression 0
seta image_filter "GL_LINEAR_MIPMAP_LINEAR"
seta image_preload "1"
seta image_lodbias "-1"
seta image_ignoreHighQuality "0"
seta image_ignoreLowQuality "1"
seta image_useCache "1"
seta image_cacheMegs "125"
seta image_cacheMinK "50"
seta r_swapInterval "1"
seta r_useHighQualityPostProcess "1"
seta r_shadowsHighQuality "1"
seta r_displayRefresh "0"
seta r_renderer "best"
seta r_multiSamples "8"
seta r_useHBAO "1"
seta r_useRenderThread "0"
seta r_visDistMult "1"
seta r_useMotionBlur "1"
seta r_skipBump "0"
seta r_skipSpecular "0"
seta r_skipNewAmbient "0"
seta r_shadows "1"
seta vt_maxaniso "2"
seta vt_lodBias "-1"
seta vt_pageimagesizeuniquediffuseonly2 "8192"
seta vt_pageimagesizeuniquediffuseonly "8192"
seta vt_pageimagesizeunique "8192"
seta vt_pageimagesizevmtr "8192"
\\Vincenttwc