The beta version has not been updated since the 2013 fixes were moved to the public release, so it wouldn't help with 2010/2012 systems. It was a public beta, available on Steam and GOG (using Galaxy).
The Windows version does not have this AVX2 issue. It also does not officially support integrated graphics, so there may be texture issues. Of course with the GPU being under the performance of the minimum requirement, a low resolution and graphics settings would likely be needed for acceptable performance.
Hopefully the additional AVX2 fixes will be ready in time for the next game update. That is still in the 'being prepared' stage, but within your definition of short term.
