This new version of the launcher appears to have serious memory leaks. It’s causing the game to greatly induce more CPU usage than the last version did. It’ll sometimes have periods when my MacBook’s fan RPM is lowered to 2200 from 4000–5000 then back up again. It doesn’t matter if you pause or stand still in the middle of nowhere in-game.
Thanks for your report! This should be fixed in the latest release.