I found this to be a combination of TC and clock ... I have one saphire that likes to do hard hang when it gets a little hot which requires a power cycle as a reboot gives the .Xauthority issue.
I do not think the issue is BAMT but configuration. The AMD linux driver cannot recover quite as well as the windows, but tuning has been my answer for stability.
neurocis.
Author -
https://github.com/neurocis/coinvert for BAMT.