When trying to setup 3 sensors, I kept getting issues with poor tracking quality 8609 and other 8#### errors. I didn’t always have this issue, I might have added a new USB device, but I can’t quite remember, But I do know that the USB expansion card fixed everything as I suspected it would.
I also guide you through installing it, this should fix the issues for most people.
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ALL PRODUCTS I MENTION IN A VERY NICE LAYOUT
VR PRODUCTS AND ACCESSORIES
YOUTUBE / FILMING SETUP