Hey there.
I tried playing Destiny 2 through Steam Link, on my Samsung TV and using a PS4 controller, as I have been doing for the last year with pretty much any game compatible with a controller.
Destiny 2 doesn't seem to recognize my controller when playing through Steam Link.
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There is no support for that. You have to use the built in bluetooth on your PC to connect or USB the controller to your PC
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Destiny 2 does not support Steam input. As Destiny 2 has it's own seperate controller support, you would need to connect the controller directly to PC via USB or with the PS4 Bluetooth adapter.