If i dont use the chromium 64 at all, the performance in general is alot worse, barely above 150 on avg (yes ik its still alot, but not compared to what it can be).Dev branch is the next version of Garry's Mod. It contains all the changes that will be included into the game in next update. So you can test the changes and make sure next update will be less buggy by reporting bugsĬan I play on normal servers with this version of the game?.So that addon developers can adjust to upcoming changes.You can find a full list of changes between the Dev branch and normal version of the game here and a live change list here. This does not mean you shouldn't use the Dev branch. Go to Betas tab and select dev - Development Branch from the dropdown: Right click on Garry's Mod in Steam and select Properties: It is invaluable for us to have people test the game before the next update is out to make sure nothing breaks, or at least not that much. Go to Betas tab and select NONE - Opt out of all beta programs from the dropdown: You can ignore the 'Enter beta access code' field, it does nothing for Garry's Mod. To check which branch the player is using, you can check the Global Variables BRANCH clientside. This can be useful if you are developing something with features that the current branch does not have, such as Chromium features in the x86-64 branch.