This is my first jane coin, so this n factor change thing is new to me.  I was spewing hardware errors when I switched my miners over to cache this morning, so I've dropped the intensity, they're running cleanly now at about 1/4 the hashing power or something (which is making it pointless to mine cache at all), but they seem very underutilized - the temps are very low.  I'm suspect I can get more out of them if I tweak things other than intensity, but I'm not about to spend a half a day doing that when I'm sure people have seen this before and can save me a lot of time ... is there a general guide/rule of thumb for what to tweak other than just intensity when there is an n factor change on a jane coin?  I don't expect to see the same hashrate, obviously, but my GPUs sitting there bored and cool can't be optimal.


Cheers.