I personally recommend 2 steps to leveling your blue and purple mods.
Greens I would just level to 5 followed immediately by 12.
Blue I'd level to 8 and then immediately level to 12 if the speed increased.
Purple I'd level to 11 and immediately to 12 if the speed increased.
If the speed didn't increase on the blue or purple I would just leave them at 8 and 11.
The reasoning is that there may potentially be rollbacks on not entirely leveled mods so the ones that get the speed increase should be leveled to the breakpoint where there are no more secondary stat changes, while the ones that don't should be left for what is potentially another crack at raising that speed up. They say it shouldn't affect existing investments in mods, but things don't always work the way that we were lead to believe whether because of bugs or poor interpretation. Better to just play the odds.
