Using the new dtbs, the desktop seems a bit more fluid (might just be confirmation bias ). Anyway, better memory timings can only be a good thing, yes?
Funny thing about the 1.5 speeds not working on my box. All I did was remove the status="disabled" lines in the dts and recompiled. I remember doing similar things to a A5X Max box and successfully booting. Maybe if I enabled the new speeds in this new dtb...
...nope, that didn't boot either