Energy and the DPS Operative.

[Mycroft]

You are basicly taming the horse from it's tail.
First you are implying an infinte fight length, instead of simply splitting the fight into cycles determined by Adrenaline Probe availabilty.
Secondly, at the end of the fight you want to be at 0 energy, because energy not spend at that point simply is damage wasted.
Third, you have to account for what buffs/debuffs you have to keep up on you/the target which basicly define the backbone of your skill rotation.

Energy consumption is basicly devided into 2 phases: conservation and burn.
Burn Phase is determined by 3 factors:

• Adrenaline Probe uptime
• Encounter Mechanics requiring certain actions (as burning adds down) which may require you to delay your burn phase accordingly
• the Encounter is about to end

Conservation Phase:
you don't want to not activate any ability when below 90%.
what you do want is to be above 80% after activating that ability which is inherently different and not applicable for all skills.
This basicly means a little planning is required.
You need to know what skill you want to use next and how much energy it will cost, how much time is left until you have to spend that energy and what other skills are available that fit into that frame which will not cause you to drop out of optimal regen. A thourough rotation plan at this point is mood as we can not test it live and have no input on viability on all skills.

regarding stimboost clipping:
to minimize tick losses you will want to reapply stimboost within the consecutive second of an applied tick, no matter if it is clipping the old buff or letting it fall off.
because of human response time you will always delay the next stimboost cycle by a fraction of a second because failing to do so means you just lost that last tick that you wanted to happen before refreshing the buff.
due to this you want to refresh the buff as seldom as possible (while maintaining maximum uptime), which basicly means idealy you let it fall off.