When you open the game, you will know you are on the right branch if you see the New Netcode Open Beta Loading Screen. If you do not see that, then close Steam and reopen it until Rivals of Aether has an update. After you select this branch, you should see that Rivals has an update queued. Finally once it is selected, you can close the menu. Then open the Dropdown menu and select nectode_branch – New Netcode Beta.
Once that opens, navigate to the Betas Tab. Find Rivals of Aether in your Steam Library then Right Click it to bring up the option menu. The New Netcode Open Beta can be accessed on Steam. The feature is not ready to go live yet, but we want your help to stomp out all the bugs and put the finishing touches on all the new features. The time has come! The new netcode that we have spent parts of the last two years working on is now available on Steam.