This patch has been released on Steam and GOG. Are you getting an AVX2 error on startup, or a crash?
Does your GPU have Metal support? That is required in additional CPU support. Other than systems that can be upgraded, or using an eGPU with Metal support, mid 2012 MacBook Pro and MacBook Air are the earliest Mac models with Metal support; iMac and Mac mini start with late 2012, Mac Pro late 2013, and MacBook early 2015.
With a Metal capable GPU, please reply (or email supportdos2@larian.com) with your system specs (you can use the 'System Report' button from the 'About This Mac' Apple menu item, or the 'System Information' app in the utilities folder), including the OS version number, Mac model year (indicating early/mid/late) and model identifier. Also post/email/PM a crash report (collected in the 'Console' application, under 'User Reports'). Alternately, the crash reports may be saved in the '~/Library/Logs/DiagnosticReports' or '~/Library/Logs/CrashReporter' folders.
