Actually it would be more usefull to know the specs of memory than its brand. Like "DDR4 2x8Gb 3200 CL 16"
This is from Gamers Nexus benchmark from two years a go:
Considering how much memory performance affects Ryzen CPU's and that your kit might be slower, haver worse subtimings... and in worst case, not even have XMP enabled, I think you are limited by CPU and/or memory performance.
If you don't have XMP enabled, enable it now to get performance boost (from BIOS)
Also install HWINFO64, run as administrator and select sensors only. Keep an eye on your CPU temps. High temperature might an issue.
One thing you might try is, install latest chipset driver, DDU current GPU driver and reinstall it just in case there are some remnants left from RX570 intallation.
Then, while less important...
You could try, how fast you can make that memory kit run stable with 1700X to get even more performance. Overclocking is of course done at your own risk, but overclocking memory should not be risky. Making sure XMP is enabled is more important.
Increase memory voltage to maybe 1.375V. Then try to increase memory clockspeed and try if machine works ok. When you go too far, computer won't boot and you might have to unplug it from wallsocket and short CLRCMOS pins from motherboard for a couple of seconds, then boot the machine, enable XMP and the rest again, aso.
Never had a 1000-series Ryzen and can't remember anymore, but I think it is ulikely you'll get more than 3200MHz working, likely less.
