Kwee

Ya this is on PC

It's just cached data, it won't affect anything and will be cleared out if it's needed. When you reboot it probably cleared out a bunch of this.

I suspect you've been doing a lot of streaming/downloading or some other high bandwidth application which would account for the received packets being a lot higher than transmitted

They're independent features, unprioritized packets don't mean the same thing on both. Your connection has a little bit of packet loss, which is why you're seeing unprioritized packets on the System Information page. Your unprioritized packets represent 0.01% of your total received packets so it is nothing really, you would not notice any difference with that, it is within normal parameters so you can safely ignore it. As to why others see 0 it just depends on their ISP etc.

Although the number seems big, in comparison to received packets it is a very minute percentage and therefore within normal parameters so nothing to worry about