GentleLASE has a stable very low pulse duration of 3ms. On Apogee, pulse ranges from 5ms to 100ms or so. So without knowing the pulse, it’s still hard to say whether those are high settings. They’re probably average. If it’s close to 5ms, the setting was in fact pretty high. If it’s closer to 100ms, it wasn’t. On 15mm, GentleLASE max is 30J, but once again that’s with 3ms. If pulse is higher, the overall power is lower.
It sounds like you don’t trust laser to do a good job of evening out the reduction at this point. What you can do is use a Yag laser which targets mostly the very coarse hair. So that may achieve what you’re looking for. Otherwise, with electrolysis, you can pick and choose specific hairs you want removed.