[**ATTN Users with Thermaltake Riser Cables**]

Like many of you guys, getting super frustrated with this.

First PCIE Riser  would only work in second PCIE slot at 2.0 - Received a replacement but now the top slot works but only runs at x4 speeds as opposed to the x16 that it should run at. 

Anyone else having a similar issue? Have checked BIOS etc, tried when GPU under load and just can't get past it.

 

Surely I can't be this unlucky to get TWO dud PCIE risers in a row...