I have been running a biostar TB85 for nearly a year and it’s solid. Random freezes can imply hardware trouble, especially dead GPUs or risers. Riser quality varies. Expect to replace them.
If I suspect hardware trouble, I use the mining software to stop using one card at a time to see if the issues is corrected. Once I home in on a possible suspect I pull it and test on a test pc. If it happens again, then either the GPU or riser is dead.
If it’s software, I just wipe the HDD and reinstall the OS…a “Syswipe”, if you will.
EDIT: I also have miners with the Biostar TB250 BTC motherboards and like them better since 1151 CPUs are much cheaper than 1150 ones 