Jan 8 17:22:46 Plex kernel: pcieport 0000:00:03.1: AER: Multiple Corrected error received: 0000:00:00.0
Jan 8 17:22:46 Plex kernel: pcieport 0000:00:03.1: PCIe Bus Error: severity=Corrected, type=Data Link Layer, (Receiver ID)
Jan 8 17:22:46 Plex kernel: pcieport 0000:00:03.1: device [1022:1453] error status/mask=00000040/00006000
Jan 8 17:22:46 Plex kernel: pcieport 0000:00:03.1: [ 6] BadTLP
Jan 8 17:22:49 Plex kernel: pcieport 0000:00:03.1: AER: Multiple Corrected error received: 0000:00:00.0
Jan 8 17:22:49 Plex kernel: pcieport 0000:00:03.1: PCIe Bus Error: severity=Corrected, type=Data Link Layer, (Receiver ID)
Jan 8 17:22:49 Plex kernel: pcieport 0000:00:03.1: device [1022:1453] error status/mask=00000040/00006000
Jan 8 17:22:49 Plex kernel: pcieport 0000:00:03.1: [ 6] BadTLP
Jan 8 17:22:50 Plex kernel: pcieport 0000:00:03.1: AER: Multiple Corrected error received: 0000:00:00.0
Jan 8 17:22:50 Plex kernel: pcieport 0000:00:03.1: PCIe Bus Error: severity=Corrected, type=Data Link Layer, (Receiver ID)
Jan 8 17:22:50 Plex kernel: pcieport 0000:00:03.1: device [1022:1453] error status/mask=00000040/00006000
Jan 8 17:22:50 Plex kernel: pcieport 0000:00:03.1: [ 6] BadTLP
Guessing it's your 1070 reacting badly to ASPM, just a guess tho