I debated on if I should post this or not but I'm thinking, why not: I updated my win7 BI v4 pc to the latest realtek win7 Ethernet drivers and I'd swear my CPU usage dropped big time. I really don't get it and don't have any good before/after numbers, just viewing on 'Windows Task Manager'. The drivers I updated from was a realtek version from 2018 so the drivers were not that old to start with. Anyway, of course this is DEFINITELY a YMMV but I thought that if someone else saw this and tried it and it worked for them there it may be more to it than magic, LOL!