Since cat6a shielded is sold as 10GB/s I assume at least more reputable manufacturers have verified the speed. However, the equipment to test for that speed in a residential network is expensive; so, I have not tested. Since wiring a house with cat6a shielded is not that much more expensive I think it is worth risking overkill. I have metal jacks and they work fine and my Ethernet system is fast and reliable. Should AV over IP, audio visual over internet protocol, (streaming) replace HDMI I think my network is prepared.
I run my cables from a grounded patch panel to metal jacks in a wall plate and I turn the foil down and wrap the drain wires around cable under the jacks.
I found it to be to hard to use cat6 RJ45 terminators for cat6a because cat6a is fatter. The smart money would be on trying various RJ45 before buying a lot.
Anál nathrach, orth’ bháis’s bethad, do chél dénmha
Display: LG OLED 65e6p, Player: OPPO UDP-203, AVR:Yamaha TSR 7810, Streaming: Comcast 60Mbps RG6 to Cat6a, Speakers: Mains Vandersteen IIC, Center, Surrounds, Rears Klipsch