Looking at the card it has mixed reviews for speed and personally I would have passed on it for something else.
Being that it's PCIE Gen2 would be a red flag though the interface / slot should be capable of full speed on the port.
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For testing I use a drive enclosure with an NVME inside that's well capable of exceeding the enclosure/controller, cable, and interface.
Having tested many different enclosures and cables I can say that verification of speeds is necessary rather than relying on the label / marketing for such items. In general the shorter the cable the more reliable the speeds tend to be. for 10gbps USB though anything under 6ft should be fine. Anything over tends to degrade the speed and sometimes even be sold with USB2 speeds 480mbps or mostly used as a power / charging cable.
https://www.amazon.com/PCI-USB-Type-Expansion-Card/dp/B077VRWZPK - mentions a lot of VR positive feedback
https://www.amazon.com/Yottamaster-Expansion-Compatible-PCI-Express-Controller/dp/B08DLP374T - not enough feedback but, all positive / also 20gbps using Gen3 2x2
For any AIC at this point I would be shooting for at least PCIE 3 or higher because it sets the baseline for bandwidth at acceptable levels for most anything on the market today. Things like AIC's though tend to keep prices cheap by shooting lower on their specs or using older controllers.
I don't play with VR so, it's hard to say exactly what kind of bandwidth the headset needs but, it doesn't hurt to provide more than needed. If you're not getting the bandwidth I would order a few cables on Amazon and then test them to see if any provide an improvement and return the rest when you're done testing them.