Hard Crash on Dreadnought

Act 5 Dreadnought resulted in a hardcrash near the waypoint. Finally recieved a error msg.

The instruction at 0x00007FF63ABD1EC7 referenced memory could not be read at 0x0~. The memory could not be read.

Was utilizing whirling slash and twister, with 2 tame beasts.

im also having the same issue. this has only happened in cruel difficulty for me.

update: i took off my tamed beast gem and now im not crashing anymore. no idea if this is a fix but yeah

same problem. disabling companion seems to have solved it

Same issue, game hard crashed even loading into the area. Finally fixed by re-verifying files and turning off tamed beast. Was able to turn the beast back on for the boss fight though