PCI Express Error Core-Mid Level Error on SR-IOV enabled R820

I'm getting a PCI Express Core-Mid Error consistently on three R820 that I'm trying to deploy in a hyperconverged NFV lab, I strongly think this is related to using SR-IOV based NIC passthrough for some VMs.

Installed in each machine are the following NICs:

1x Dell labeled Intel ET2 Quad Port 1 GbE Add-In NIC, DP/N: HM9JY

1x Dell labeled QLogic 57840S Quad Port 10 GbE rNDC NIC, DP/N: XGRFF

2x Mellanox ConnectX-3 VPI Dual Port 40 GbE Add-In NIC, P/N: MCX354A-FCBT

SR-IOV is enabled on the QLogic and Mellanox cards, the Intel card had problems with IOMMU group isolation when in SR-IOV mode, so instead I've passed the entire PF into a VyOS VM. Additionally, a VF from the other devices have also been passed into the VyOS VM.

Everything seems to be working ok within the operating system and I don''t see any obvious error messages there, I only see this error when I reboot the hypervisor. Within the iDRAC, the logs only appear to say an OEM event has occurred.