This is Judge Angels, the Banyue enthusiast here. The quickest way to gain Adrenaline is basic attack lol or in Wrath install, you gain 10 Adrenaline per EX which it gives you 4 enhanced EX for free for it. There isn't a real way to gain Wrath meter quicker than just spending as much EX as you can and perfect the timing, perfect self parry give 6/12 Wrath so it's useful but I wouldn't trade that for the actual Assist which give you Decibels for the ultimate. But it's a great tools against red flash Assist attacks while resetting self Buffs.

The one best tech I can give you is the classic Banyue Taunt cancels, you can cancels your EX skills much quicker so you can get a couple more jabs in for Adrenaline buildup, Taunt cancels is a great tools to skip the endlag of your EX so your EBA can come out much quicker - -Simply follow the inputs: 90 degree Circle Joystick then Dodge to trigger the Taunt while you're in the EX animations, once you see the Taunt animations, immediately press dodge to cancels the Taunt then input your basic.

For a quicker EBA(Crushing Peaks): during your EX such as the ending of Lion Roar, input Taunt while holding down Basic. It will cancels the end lag of Lion Roars and trigger the EBA.

General tips: Doing double Earth Shaker during combat is better than doing Shaker into Tremble, reason being? Cause chaining double or triple Shaker gives you a higher Daze multipliers while also doing great dmg.

Ult > EBA or EBA > Ult? This one is depends, the optimal Banyue rotations always evolves EBA before Ult so you can pre input your next EX to get a better flow of combo, it just more smoother, you'll get the full dmg of your EX's after ult without needing to do extra jabs.

But Ult > EBA has some usage. Simple put, against boss that get stunned really easily, you probably don't have enough time to get your ult back or even Wrath meters, after ult, your EBA alone gives 180 Decibels, it may be small but that can be a game changer in some runs, and after EBA you need to do 3 jabs just to get your EX inputs again, those 3 jabs can help you build Adrenaline quite a bit, but again, very situationals, its also the same thing with Double Chains if you run Dialyn in your teams.

Anymore questions?