What memory did you choose to go with? I know you said G.Skill in your system specs but what kind?
I replaced the memory that I got free with my processor at Microcenter with a kit of
G.Skill F5-6000J3038F16GX2-TZ5N. According to research, these are Hynix A-Die DRAM chips. Right off the bat I was able to achieve a slightly better Cinebench R23 multicore score and about 150 additional gigaflops according to Linpack Extreme. I'm going to say that that's because the new memory kit has a CAS latency of 30 as vs 38 on my old kit (Samsung DRAM). I also, with a suggestion from Level1Tech on YouTube, increased the fabric speed from a flat 2000 MHz to 2033 MHz which apparently can decrease memory access latencies.
Needless to say, I'm trying to eke out every drop of performance out of this Ryzen system of mine.