I noticed that many builds for this weapon force you to have to delete your combo to get more space to gain more heat dmg stacks
These stacks, theoretically, benefit if you can gain stacks every 0.5 seconds average to upkeep the 30 stacks max

This build focuses on keeping the generical Weeping//[Rush] combo by applying heavy attack efficiency so you can just hit your heavy attack button and get more combos
AND thanks to [Galvanized Reflex] you get a few stacks after a heavy attack anyways (assuming I'm understanding this function correctly) because when you go below initial combo numbers, you gain it as a fast-counting number gain (basically rapidly adding +1 to the combo count --I don't mean the multiplier) and thus giving you at most 5 free stacks if you hit fast enough

The reason why I use [Focus Energy] for the extra heavy attack efficiency is because it would allow you to hit worthwhile heavy attacks more at higher combo multipliers without losing out on said multiplier too often, thus justifying [Amalgam Organ Shatter] for its heavy attack wind up speed

Then generic melee stuff being melee influence (heat doesn't mix with elec apparently, thus you get 3 kinds of DoT, being damaging armor [Shred], bleed, and AoE DoT via elec), [Galvanized Steel] (general crit buff), [Condition Overload] (to abuse melee influence more), and beserker [Fury] (attack speed for even better heavy attack speeds

TL;DR just do a few startup kills, keep attacking, throw a heavy attack every once in a while especially if Combo Multiplier is at cap (wait no longer than 15 seconds, preferably maybe 5 seconds)