So I have been using the latest Claymore version since it came out.
My rig:
ASUZ Prime Z270-P
8x RX 580 8GB Nitro+ (Hynix)
Windows 10
Blockchain Beta Official Drivers
Claymore Dual Miner v.10.0
Modded BIOS, OC through Claymore @162w from the wall per card
Dual mining ETH (233 Mh/s) +DCR (7000 Mh/s)
Try to set original ROM, remove overclock and see if it helps, this way you can check that the reason is in your settings.
If your rig freezes, it must be something related to overclock, like wrong voltage for some power states, or something similar. It is not miner issue.
On another note, the new blockchain driver raise the power usage of your cards alot. If your mod was tight you may have to change some things like power limit or max temp.