Wan2.2 i2v (clarifications needed regarding settings on low vram system)

i gave the low/high noise unets a try. at first it went from normal first 3 frames to complete blur (like 90% blur). then i fiddled with the settings and got it to remove the blur in the center of the image but sides still blurry. but the quality seems very poor. theres a weird pixelation, not digital like squares, its more like crosshatching. and it introduced a weird lighting artifact. strong yellow light flashing in the middle. any recommended base settings to start with? i started with cfg1 on both but it was a no go