We prioritize getting a super fast reaper out on the map, have a quick factory and so forth and there is plenty of good reason to do so, but for some reason all these openings just leave a bad taste, like overdue milk in your morning coffee.
The reason behind this feeling of travesty that you couldn't quite get a grasp on is, you guessed it; mule timing!
Having exactly the same amount of energy on all your Orbitals at all times is a rather underrated quality of life perk. Instead of having to drop mules at 2 different timings for optimal efficiency, we can combine that into 1 action. It reduces the apm burden, and makes planning your mule drops easier! It takes 62 to 63ish seconds for an orbital to generate the required 50 energy to drop a mule. Your main OC has its first mule available at exactly 2 minutes into the game (maybe 1:59 because I'm a twat and you are not). That means that every minute and 3 seconds, you get to drop a mule. 2:00 - 3:03 - 4:06 - 5:09 - 6:12 ... and so on. Now if we can time our other CCs to line up their energy with our main OC, we get this incredibly neat timetable that we can rely on entirely to hit our mule timings with minimal effort! This is very helpful because when you add two or more OCs to a control group, you cannot tell what their individual energy counters are at via the HUD. What happens is that we check, and check and check again for when that mule button comes available. And obviously, many people have gotten very good at the specific mule timings of their builds, but from an attention and apm standpoint this is still rather suboptimal and will remain suboptimal for the entirety of your game (unless you do the bronze trick of just not using your energy at all until you have 400 on all your OCs ofc.)
Without further ado, here are the timings to line up your energy perfectly (obviously this assumes that you start your OC upgrades asap and have not delayed your main OC for whatever reason)
A natural started @ 1:20 will finish its upgrade perfectly synced for the 3:03 mule drop. Obviously this is not possible with a Reaper fe and is NOT! the fastest possible CC for a gasless Rax expand (it's off by about 6 seconds)
however, if you take this OC timing and get your 3rd at one of the following timestamps, you will have the benefit of 3 perfectly synced Muledrops!
1:20 - 2:23 - 3:26 - 4:29 - 5:32 and so on, are all points in the game where the sun, the moon, jupiter, saturn, and your momma, perfectly line up with the standard OC timing.