For your situation, safety is actually the most important thing to keep in mind so ur device doesnt get bricked by cheap junk. Honestly, I've seen so many people ruin their screens with cheap peltier coolers that cause condensation inside the phone... it's a total nightmare. Here's what I recommend for a reliable setup:
* GameSir G8 Galileo Mobile Gaming Controller - It’s basically the gold standard for large phones. It fits the Ace series dimensions and camera bump perfectly without scratching the frame.
* Black Shark FunCooler 3 Pro - Since others already mentioned the liquid cooler, this is a great portable alternative that actually regulates temp safely without causing moisture issues. * UGREEN 100W Right Angle USB C Cable - It handles the high wattage safely and wont fray after a week of intense PUBG sessions. Unfortunately, i've wasted a ton of cash on "universal" gear that just failed, so sticking with reputable brands is a safer bet. Good luck with the new phone!!

For your situation, relying on internal thermals for marathon Genshin sessions is basically a trap. These flagship chipsets generate massive heat that eventually leads to thermal throttling—meaning your FPS will suddenly tank just when things get intense. Honestly, the OnePlus+45W+Liquid+Cooler&linkCode=osi&------123456890?5422-20" target="_blank" rel="nofollow sponsored">OnePlus 45W Liquid Cooler is the technical king here. It’s way more efficient than standard clip-ons because it uses an external pump to actually CHILL the backplate. I think it's a must-have if you want sustained performance. Regarding the controls, the Ace series usually has a chunky camera bump. I’d suggest the GameSir G8 Galileo because it has an extendable bridge that clears large lenses easily and uses Hall Effect sticks so you wont get stick drift. If you just want triggers, the Flydigi Shadow Stinger 2 is legit for PUBG since they're capacitive and dont lag like mechanical ones often do. Also, dont buy just any L-shaped cable... Most generic ones wont support the proprietary SuperVOOC protocol. You’ll want something like the Baseus 66W USB C Cable SuperVOOC Compatible to keep those insane charging speeds while you're playing. anyway, hope this helps!

In my experience, getting your setup ready for a beast like the Ace 5 is a smart move, but honestly, be *extremely* careful with what you buy. I've wasted so much money on "universal" accessories that ended up being total junk. * **Warning: Avoid generic clip-on triggers.** I had issues with these on my last Ace device because the camera bump is usually so massive that the triggers wont sit flush. They end up sliding around or, even worse, they can actually scratch the frame if the padding is cheap. Stick to reputable brands that specifically mention OnePlus compatibility or go for a full wrap-around gamepad.
* **Dedicated Cooling:** Even though the Ace series has decent internal thermals, PUBG and Genshin at 120fps will make any phone toast eventually. I tried a cheap battery-powered fan once and it was basically useless. You really want something like the official Cryo-cooler because it actually uses a peltier chip. Unfortunately, it's a bit bulky, but if you don't use it, you'll definitely see frame drops after about 30 minutes of heavy play.
* **Charging Cables:** This is where I got burned. Not all L-shaped cables support the proprietary fast charging protocols. I bought a really nice looking braided one, but it wouldnt trigger the ultra-fast charging, which was so frustrating during long sessions. Look for cables that explicitly state they support the high-wattage SuperVOOC tech, or you'll be stuck charging at a snails pace while you play. Basically, the Ace 5 is gonna be powerful, so dont bottleneck it with cheap gear. good luck!

Building on the earlier suggestion, it seems like the group has touched on some really vital points already:

• the necessity of active cooling for those heavy Genshin sessions
• finding a controller that wont fight with the camera bump
• making sure you dont accidentally water damage the thing with condensation Honestly, this whole talk about cooling mods reminds me of my old roommate who thought he was a hardware genius. He tried to create his own custom cooling case by gluing a bunch of copper pennies to the back of his phone because he heard copper was great for heat dissipation. It looked like some weird steampunk project and made the phone weigh about five pounds. He spent hours trying to find the perfect adhesive that wouldnt melt. I remember him sitting there with a hairdryer testing the heat transfer for an entire afternoon... eventually he just got tired and went to bed without even playing anything. It was a whole ordeal that didnt really lead anywhere, but man, he was convinced he was onto something big.

Just saw this thread and honestly, you're smart to prep now rather than later. Before I share what's actually worked for me over the years, I gotta ask... what kind of environment are you usually gaming in? Like, are you in a humid area or somewhere with good AC? Tbh it totally changes what kind of gear is actually worth your money. I've seen so many people make the same mistakes when a new Ace drops, so definitely keep these in mind:

• Stay away from those thick rugged cases if you're planning on marathon sessions. They basically act as an oven for the chipset and will kill your battery health long-term.
• Be super careful with generic suction-based screen accessories. They might seem cheap and easy, but they tend to strip the coating off your display way faster than you'd think.
• Dont just grab any L-shaped cable because it looks convenient. If it doesnt support the specific high-speed charging protocol, you're gonna be stuck with slow speeds while playing. Once I know a bit more about your typical setup and budget, I can point you toward some stuff that actually lasts more than a month...

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Saved for later, ty!