Oh, you're assuming that your PC shutdowns/reboots are related to your GPU? I assumed that the problem was related to you running XMP on two unmatched RAM sticks. That's why I had suggested that you purchased a matched kit or at the least, leaving XMP off. The fact that you have to keep re-enabling XMP led me to believe that the system was trying to stabilize itself, despite the unmatched RAM sticks that you installed. Whichever the solution, I hope that your PC issues get resolved quickly. Sorry for all of your trouble.
Oh, you're assuming that your PC shutdowns/reboots are related to your GPU? I assumed that the problem was related to you running XMP on two unmatched RAM sticks. That's why I had suggested that you purchased a matched kit or at the least, leaving XMP off. The fact that you have to keep re-enabling XMP led me to believe that the system was trying to stabilize itself, despite the unmatched RAM sticks that you installed. Whichever the solution, I hope that your PC issues get resolved quickly. Sorry for all of your trouble.
Sorry for any confusion, I just added on the XMP to see if that could narrow down my problem