You can use Helldivers 2 push to talk by pressing Capslock on PC, but you can always change the key binding to something else. While you can change your voice chat settings in Helldivers 2 under Audio options to activate push to talk, it doesn't tell you anything about how it works or what to press, confusingly. That means you have to poke around in the Keyboard and Mouse or Controller settings to check and re-bind the push to talk button.
Where to find the push to talk button in Helldivers 2
Obviously your first guess to find the push to talk button in Helldivers 2 is going to be the Audio options, but all you'll find there are the various Voice chat settings where you can set it to Open, Push to Talk, Push to Mute, and so on. To find out what the push to talk button is and change it if you want, you actually need to go into the Mouse & Keyboard options and choose Change Bindings.
Once in the keybindings settings, tab over to the third communications option where you'll see the 'Voice Activation (PTT/PTM)' option, stating it's Capslock. From there, you can change it to anything you want, or leave it, safe in the knowledge you know what it is now.
It's an easy change for mouse and keyboard players, but if you're playing with friends on PS5, perhaps via Helldivers 2 crossplay, push to talk is not something I'd recommend as the PS5 button is unbound by default:
That's probably because there aren't a lot of buttons left you could realistically bind it to on the PS5 pad, if you wanted to use the option - definitely best to stick with regular game chat or switch to Discord on PS5. But, if it's something you really want, I'm sure you can work something else out. Who needs a reload button anyway?
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