diff --git a/src/atombios_crtc.c b/src/atombios_crtc.c
index e79ba13..2349f5f 100644
--- a/src/atombios_crtc.c
+++ b/src/atombios_crtc.c
@@ -231,9 +231,15 @@ atombios_crtc_set_pll(xf86CrtcPtr crtc, DisplayModePtr mode, int pll_flags)
 
 	if (IS_DCE3_VARIANT && mode->Clock > 200000) /* range limits??? */
 	    pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
-	else
+	else {
 	    pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
-
+	    //pll_flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
+	    //pll_flags |= RADEON_PLL_PREFER_HIGH_REF_DIV;
+	    //pll_flags |= RADEON_PLL_PREFER_LOW_FB_DIV;
+	    //pll_flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
+	    //pll_flags |= RADEON_PLL_PREFER_LOW_POST_DIV;
+	    //pll_flags |= RADEON_PLL_PREFER_HIGH_POST_DIV;
+	}
 
 	RADEONComputePLL(&info->pll, mode->Clock, &temp, &fb_div, &ref_div, &post_div, pll_flags);
 	sclock = temp;