According to a now-deleted tweet from a Remedy employee, somewhere around 23% of PC players won’t be able to play the game.
To be clear, the employee didn’t say that number explicitly. In response to the outcry over the Alan Wake 2 system requirements, the employee shared that only cards with mesh shaders are officially supported, meaning any Nvidia 10-series or AMD RX 5000-series GPUs or older aren’t officially supported.
I did some quick math on Steam’s latest hardware survey, and that accounts for somewhere between 23% and 25% of participants, depending on if you count integrated graphics or not. The number is much larger if you include Nvidia’s GTX 16-series graphics cards, which support mesh shaders, but fall below the minimum requirements for Alan Wake 2.
The developer says that cards without mesh shader support will still run the game, but you’ll likely experience much lower performance. It points to the example of an RX 5700 XT and RX 6600 showing a large gap in Alan Wake 2 despite having similar performance otherwise. Strict mesh shader support, according to the developer, came up after the team experienced “lots of perfs issues and bugs” with a vertex shader path, leading the development team to officially drop support for it.