If I go lower than 580 tRFC I get errors after 3 or 5 hours, also 3800Mhz and FLCK 1900 is 99% out of the table with 4 DIMMs as I get errors after ~1 minute. With these settings, the best est latency recorded on AIDA64 is 64.2 ns. What else can I try? Should I try GDM off or would it be suicide?