Windows Mixed Reality was inferior to Vive and Rift on day one.
Rather than building a VR product that works like Rift or Vive, which use outside sensors to track a user's movement in a headset, Microsoft uses sensors on the headset to track movement. It's not exactly the untethered inside-out technology VR users are hoping for, but it's a unique way to track VR.
The problem is, the two sensors that track head motion and controllers leave a lot of blind spots. Hold a controller close to your chest, and the system glitches. In gameplay, that's a huge weakness; it makes Windows Mixed Reality clearly inferior to Rift and Vive, despite being released a year and a half later. Even the headset display and latency seem inferior to those of competitors.
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