>>285971597
I use a GTX 970 with a Valve Index and I'm doing fine, hope that you have the 6GB 1060 though.
It also handles VRC meetups fine unless the world is huge.
I finished HLA with below recommended minimum specs, my PC tanked to VRChat levels during chapter 7, but that was all, game was playable and I enjoyed it.

>>285971772
No cards have USB-C ports, USB-C can carry a video signal if you have the right cable, usb-c cables vary a lot, some of them don't even do data transfer and only deliver a charge.
All you need is a decent USB 3.0/3.1 port.