Sorry dood, there simply aren’t any 2015 MacBooks (Pro or otherwise) that are powerful enough to run Half-Life: Alyx. You TECHNICALLY might be able to get away with an external GPU if you have a 15-inch MacBook Pro with the high end CPU and opted for 16 GB of RAM (Speaking from experience playing with a CV1 on a 2014 and 2016 MBP with an eGPU), but even buying an eGPU chassis and a graphics
This game is ready to improve your gameplay, that is why the conventional VR headsets can not deal with Half-life Alyx. VR on PCs is getting a lot more crowded. To avoid the laggy gaming experience you must purchase a compatible VR headset. A wrong VR headset can destroy all your gameplay so never compromise on it. Although Valve has its own headset on the market, the good news is that Half-Life: Alyx is compatible with nearly every headset that supports SteamVR, which includes the majority of TU8czm.