You measure the input current so the led current is higher but anyway 10W on two XMLs are only 1.5A or so…which is way to low. But this could get better with a resistor mod.
The really bad news is that it doesn’t deliver full power on a slightly higher battery voltage than the forward voltage, areasonable mtg2 driver should drive until around 6.5V. I am also interested on a coil free picture.
Glad you have ordered the other one too, this will work way better.
Have you followed one of threads with the hx1175b drivers, it seems to be a really badass one.