Laptop keyboard unresponsive - I think my (unknown) laptop is affected by the kernel Zen IRQ regressions - how do I work around this?

I picked up a laptop a couple of months ago for the purpose of setting up Linux on (I chose NixOS for stability) to go with my existing desktop. It’s an Infinity E15-5A165-BM (Infinity being an Australian local manufacturer of gaming laptops) which features a Ryzen 5 6600H CPU and a GeForce 1650 GTX....