Making a VR game, the version displayed on the monitor is stretched

I’m creating a basic VR project using URP, and an HTC Vive. I hit run, and the game view is stretched horizontally. The project looks great on the HMD. Looks great on the game view when it’s not running. Setting left eye, right eye, both makes no difference. Messing with the screen resoution in code with Screen.SetResolution() seems to do nothing. No difference in editor vs. build. How can I get it to render without the stretching?

I have a game but have only recorded the output i Windows, like one eye.
Running OBS-Studio. I’m using a Rift.

The output window is sensetive to the Screen.SetResolution() if you do at start of your project.

if (!bInited) {
    bNoVR = true;
    Screen.SetResolution(1280, 720, true);
    Debug.Log("Error initing VR, continue with no VR");
} else {
    Screen.SetResolution(864, 960, false);
}

But I have never experienced any stretching…