texture loading

I use megascenary 2.0 and it looks real good except for the real fine detail loads slow.so detail pops up.not sure if there is a setting in the config or if my video card is not enough.

my specs are.

processor -i7 lga 1150 4790 unlocked

memory-corsair 1600 extreme

video-evga gtx 7600 2048 mbytes memory

i hate to buy a new video card as that one is only 9 months old

thanks ted kiser