Suggest that you start out with all your RAM timings at their stock values.
Also make sure the vdimm is set to the correct voltage range for the specs of your DRAM sticks. If you don't know what that is, you can look it up on the DRAM company's web site.
Also start out with your HTT set at stock, say possibly 200?
Then with everything at "stock" settings, run about 25 loops of each of those tests only, to more quickly reveal possible problems, before you do the entire cycle of all the 8 tests, .
For me, test #7 of in Memtest86+ v1.7 is where there are sometimes errors, so I think of test 7 as the "hard" one.
In my opinion, usually the more likely source of RAM problems is with the RAM settings in bios, and the much less likely source is a defect in a stick of RAM, although guys seem to jump to that idea first. Patient testing!