Touchpad always works, but the haptic triggers and rumble need you to be wired. They also only work in supported games like Spiderman. I remember needing to go into desktop mode to enable the controller’s “speaker” for the rumble.
Quake 4. I remember running it on a very cheap GPU and following tweakguides to get it running properly. The game that actually got me to pull the trigger on new hardware was Battlefield 2142.