MSIAb 4.6.4 b4, RTSS 7.3.2 b5, Win10 20H2/GTX 1070 After numerous testing the "PCI Bus Usage" sensor in RTSS I'm not sure it works properly. This is my usage all the time no matter what game I run: https://i.imgur.com/OztmRVu.png Both global or with per-game profile. THE only time it works (as in: goes to 92%) if I run synthetic PCMark test, the Hairy Donut also does not trigger any changes in the sensor. I'm reading it wrong? To me "PCI Bus" implies the GPU PCIeX bus, the one used by GPU. May be I'm wrong in my assumption and it is total system pci lanes bandwidth approximated? But even then random 1-3% percent spike for games dont make sense.