What do stats when selecting F1 mean ?

Is there a guide on how to interpret what the stats are when you press F1. Most are self explanatory but I’m trying to understand how some of them relate to the game performance.

For example the latency number is almost always constant around 8-10ms. Is this the ping to the gateway or between the actual game server and the gateway ? A low ms number is great but it means nothing if the bottleneck is on the server itself.

The cpu number bounces around quite a bit. In a story zone or map it is fairly stable around 20-30ms, but if you fire up the world map and go back and forth in a story zone from a waypoint the cpu can spike to 200-300ms which seems crazy. My system is far from a potato.