2800 XMP is probably playing with your BCLK...
I would think about running 2400 instead (Or 2666 if you want). Input this speed manually and maybe input XMP values for first and second and third timings manually too. This way you can leave your BCLK on 100 . Then you might be able to tighten timings later. Maybe the sticks have a second XMP profile for one of these speeds?
Anyway...you'll find you are much better off overclocking manually. Allt eh software OCing is based on catch-all voltage levels that often leave you using more voltage than needed and running hotter..
I would aim for 4.0 or 4.2 GHz daily OC.
Just set multiplier 40 or 42, Disable Spread Spectrum and disable svid support for CPU and RAM, and then try some manual voltages to find stability...start at 1.25v and work down...dropping 0.01v at a time untill you are unstable running something like RealBench stress test.
Once you have found your min stable voltage....lets say you end on 1.2v for 4.0 ghz...just plug 1.2v into "aditional turbo mode CPU core voltage" field when you change manual voltage to adaptive.
Start simple like that....