I've owned 2 gaming laptops in my lifetime and both had similar issues that were never fixed.

One was the first gen Alienware M17 with two GTX 270M GPUs (yes two) and an onboard nvidia GPU whose specific model I can't remember. That one suffered from stutters and audio crackling, etc. It was sort of fixed by disabling SLI and the onboard GPU and sticking to a specific driver that was modded, the driver was by someone on the notebookcheck forums IIRC. Later on I think it got somewhat patched with a bios update that let you use SLI without the stutters, but I think the laptop reached EOL without it being fully fixed.

The second was an ROG ASUS laptop with a GTX 460m (I can't recall the laptop model). Pretty much the same story as the OP but I didn't have the knowhow to go deep into the ACPI code. The only change from the story is that latencymon kept attributing the latency spikes to multiple dlls, sometimes it was some wifi driver, other times it was an nvidia one. I don't remember the full fix for that one, but it involved me changing the wifi card and disabling the dGPU (not the onboard one) when I was not gaming so I could watch videos and such without it crackling. Funnily enough it didn't crackle much when actually playing games (it still happened, just very rarely).

I stopped buying gaming laptops after that. Seeing this story makes me think things haven't changed one bit.

I am frequently asked for hardware purchasing advice by family and friends. Starting around 2017 or 2018, if asked to recommend a "gaming" laptop, I have refused. I never had a good experience myself, and more often than not, what I had recommended over the previous years ended up flawed or outright broken. Across every OEM and brand. I tell them to settle for a professional/business SKU with a low-tier dedicated GPU, or give up on laptop gaming entirely. Is it worth the money to pay a "business" premium for a weaker system? No, and I'll tell them that. It's not a good deal in on-paper-dollar-for-performance terms. But at least there's a chance that all of the components function and are supported!

What use is a "good price", when what you get is a quality and support minefield?

I've owned two gaming laptops and never had issues like this.

First one was a Clevo (rebranded as Medion) with a GTX 970m that I bought in 2017. An absolute beast, I lugged it in a backpack around the world for 4 years, including to places you really shouldn't bring a laptop like beaches and rainforests. I passed it my girlfriend's nephew and it is still going strong and being used every day. I repasted once in that time.

My current laptop is an MSI GE66 with an RTX 3070m bought in 2022. It's loud, I've repasted recently because it started overheating. It had some problems with the screen connector which they fixed under warranty fairly quickly. But aside from that it's solid.

One thing about both of these laptops - they are very easy to open and it looks like I could repair/replace pretty much every removable component easily. No glue.

The only thing I consider a real problem is the MSI fan noise. Well, that and the power brick which is the size of a literal brick.

Laptops are vile piece of shit devices, as a rule.

All the complexity of a PC, in a package the size of a book, with the engineering quality of a Happy Meal toy.