Wait, is that why I had to reinstall windows?
I have a Samsung Series 7 Gamer, that's right, the ridiculously bright orange model, and their bloatware is... interesting. It manages to mostly stay out of the way in terms of hurting performance, but there's a lot of it and it's hard to disable any one piece without breaking all of it.
After a clean install of windows, necessary after windows update stopped working and refused to download updates, hmm, OMG somebody please tell me I didn't have to reinstall all of my software because of something they did on purpose... Ugh.
Anyway, after a reinstall from the factory image, there is no way to make the cool "gamer mode" switch to work like it did when the computer was new, it's just a normal power switch. Samsung's "cool" stuff is very invasive and apparently not installable. But I'm somehow less interested in getting it to work, now...