the only idea is that you mainboard doesnt support your ram at its full speed
so u have to reduce clock to find out which speed it can run withou fault
once u get it stable, u can experiment with higher clocks while chnaging ram timings, cad settings and so on
Memory overclocking has a significant impact on performance of AMD Ryzen-powered machines, but the alleged complexity of memory tweaking on this platform, largely fueled by misinformation and lack of documentation, has kept some enthusiasts away from it. We want to change this.
www.techpowerup.com
here some usefull guide about tweaking ram settings on ryzen
u may try setting soc voltage to 1.2v, with 4 sticks memory controller has to work hard , 1.2v is max safe limit