X470 Master SLI very long boot time

im pretty certain
when using the dram calculator

entering the SPD data from cl16 ram

will not return cl14 timings
when you select 'SAFE' SETTING

hence why i suggested the calculator and SAFE settings

EDIT

ok after three attempts to open your link ...........

you have selected samsung 'b' die and thiaphoon shows the patriot as having b dies

im quite certain theres an error here

1) patiot are not really known for using samsung b dies
2) if they had used b dies the timings are far far more likely to be cl16/16/16/ for all the primary timings
3) b dies are end of life and have been for a while

i feel the error here is detecting incorrect ram info and thus the dram calcultor is giving out wrong info from wrong info inputted

Edited by datonyb - 15 May 2020 at 9:15pm

DDR = Dual Data Rate
1600mhz x 2 (Dual) = 3200mhz

As I wrote earlier, reducing timings does not bring the desired result. Asrock did not provide information about the compatibility of any memory with ZEN2 processors, based on the Matisse core. Manufacturer Patriot reports that these are memories intended just for Ryzen's 3th gen. Moreover, on the technological pages they confirm that they are memories specifically for the 3th gene Ryzen. If Asrock released a list of compatible memories, I would certainly buy something that is on this list. I certainly would not buy a memory that anyone would advise against this platform.

I try to calculate by this software as You wrote.

What's more, I had to increase RAM voltage by 0.01v in relation to what was in the XMP profile, otherwise she did not want to work on the profile settings. Suspect some measurement error, voltage deviation.

What CPU? Memory doesn't appear to be on the QVL, so luck of the draw there and could cause some "training" lag. Memory in A2/B2? ..does it boot any quicker with just 1 stick of memory in? You can try resetting to defaults in BIOS and see if that helps .. you can enable "Fast Boot" as well and see if that suits you better.
I had the x470 Master SLI and I don't recall having annoying slow boot times .. ran the 1700, 2700x, and 3700x on it and non QVL RAM... without Fast boot enabled.
My daughters ASRock B350 Fatal1ty ITX boots pretty quick .. had a 2200g, then my old 2700x and now a 3600x with non QVL RAM and with both 5400rpm laptop drive and now a bit quicker with the NVMe drive

My current setup boots a bit on the slow side .. side by side booting with an old Intel Dell laptop with an SSD .. the Dell boots faster until it gets to loading windows .. my Steel Legend boots slow until it's loading windows and then bam .. .ready to go.