Sprite Flicker

I'm having a difficult time with flickering sprites when they are scaled below 1.0f and moving on the screen. I've fiddled with a few things but the only way I have been able to reduce the flicker is by actually making my texture files smaller, which creates too much in loss of detail. Is there a way to "blur" or lower the detail of a sprite texture on the fly, or possibly some other method of reduction in flicker? Thanks Cyric