You can try "Normal" Dram voltage setting, or you will have to test 1.3V as that is the lowest you can manually set. "Normal" may correctly set the specified amount in the XMP profile, so test that first.
The Dram voltage setting is in the MIT Section, Voltage settings page.
Did you set Auto, then reboot and look in PC Health section to see what voltage is actually applied? If you did not please do that for Auto, and Normal, maybe one of those will be closer to 1.25-1.35, if not you can just use 1.3 or 1.4, both should be a little less anyway (Like 1.28-1.38)