MTP algo is incredibly unstable.. You're going to put an algo out there with lots of bugs and then charge 2%? Come on bruh...
Open Afterburner or similar and check why your rig is unstable. Very easy to address... CD is running smooth without any problems.
Only the 5% rejected rate is a little bit arrrgh, but I thing CD will work this out.
to reduce the rejects, change to fix diff, d=512 or d=1024
(but CD is still unstable on 1080ti, while stable on 1070)