2018 MacBook Pro w/ Razer Core X & AMD Radeon RX Vega 56 Steam & CS:GO Issue  

Did you set Prefer External GPU on the Steam app or the game itself in ~/Library/Application Support/Steam/SteamApps/common/ ?

Ah okay. I don't see Steam in my Library>Application Support folder.

In Finder press SHIFT + COMMAND + G. Once the “Go to the folder” text box shows up, paste ~/Library/Application Support/Steam/SteamApps/common/ in there and hit ENTER. Make sure you have the wiggly symbol in front of the path. 

So your name is on point lol thank you so much for your help! It worked and I'm in the folder. How do I go about manually setting the eGPU from here?

Posted by: itsage

Did you set Prefer External GPU on the Steam app or the game itself in ~/Library/Application Support/Steam/SteamApps/common/ ?

I set the preference on the Steam app and the desktop shortcut. Not in the folder path you sent me. While I'm in the common folder and it's sub-directories I can't find anything I can manually set a preference on. I figured it would be the csgo_osx64 because that's basically what's loaded when I double click the desktop shortcut, but I'm not seeing an option under Get Info.

I've been looking into this myself and I haven't found a way to internally accelerate cs:go on a mac right now except with a headless display adapter. As you said the csgo_osx64 "app" (launcher?) doesn't have the option to set egpu preference and when I try to add a .app extension (which gives the option to set egpu) then cs:go doesn't launch.

I'm sorry you're dealing with this too but glad I'm not alone. 😀

Yeah I'd recommend getting a headless display adapter if you're going to use the laptop screen.

That thing is cool lol. I'm not sure why I'd need that though. I'm totally new to this graphics card stuff and especially so on a MacBook. So far I've had no problems, Diablo III has been fine, save for glitchy particles and shading in certain areas. 

Details here it creates a "ghost" display that you can set as primary so OpenGL uses the external graphics card. Maybe if CS:GO is ever ported to Metal graphics on mac that will fix this but who knows if/when that'll happen.

Well Mojave was supposed to, at least I thought solve that problem with the internal display.

But, if the adapter will allow me to utilize my internal display while playing and let me use my egpu. That’s fine by me.

I  am curious though if itsage had a method for solving this issue. It seemed for a second like maybe there was a solution.

https://egpu.io/forums/mac-setup/state-of-egpu-for-macs-mojave-10-14-update/

itsage does a write up here, it’s really well done and informative.

Yeah there might be a solution I don't know about. I think Mojave does fix 99% of the internal acceleration issues but unfortunately this is just a weird edge case.

Well, FWIW though you’re able to play CSGO with your eGPU using this little adapter?

Yeah I have an external display that I usually use but with one of those adapters I can accelerate it when I don't have my external display.

Thank you so much for all of your help, that’s a solid solution for now.