I don't know of specific formula myself but tWRRD is often 3 on DR, it works for me. If I leave it on auto it goes to 1, which also passes stability tests but Veii recommended 3 a while back.yes i have 5800x and dark hero
and i habe another question how i know which timming i can put on
tRDWR will partly depend on what you have tCWL set to, I can do 14/8, but when going to 12 tCWL lowest I can go is 9. 14/9, 14/10 and 14/11 I've seen as well. Just depends what your sticks can do.