I spent the better part of this week testing, fixing and improving network encryption in cooperation with EAC. We're confident that it's now in a state where it can go live on the vast majority of servers, which is why it's enabled by default starting today. It does come with some performance overhead, but it should be minor enough for all servers to have it enabled without running into problems - particularly since we improved server performance in other areas quite a bit this week. If you're a server owner and you're having trouble with it on your server you can adjust it using the encryption convar.
- encryption=0 disables network encryption completely
- encryption=1 uses a very basic encryption algorithm
- encryption=2 enables the full network encryption
The default value is 2 and we highly recommend leaving it that way. Changing the convar at runtime via the server console or RCON is supported, but the updated value only applies to players who connected after the convar change.