Was what was recommended with safe settings, ran through all timings then tried disabled as per fast setting and no boot. F9 repeat until having to F1.
Assuming I'll need to start again with it disabled?
Cool, I'll go back to the drawing board and run with it disabled. Few more hours of fun!
Thats me done. Geardown disabled im not going to bother with. Couldnt get it off at 3666 1t. 3666 is the highest i can boot on 1t, ended up booting 3800 on 2t and keeping GDM enabled. Absolutely hammered the mem as low as it'll go, highest read / write /copy and lowest latency i can get (4dimm SR). Passes TM5 no problem. Doesnt seem to be much difference vs 2x16DR 3800C14 to i'll call this one job done i reckon.