I flashed my RX 570's back in April 2017.
Claymore's miner has been working stable in version 11.4, 11.3 and any previous version just as well.
I think you guys complaining about crashes must have dodgy memory straps or are just overclocking too far. Just check the log, identify the GPU going down and dial back that OC.
maybe you are right. but i think i/we just maxed our clock/mods with previous version with stability.
now that claymore adjusted the client (i dont know, maybe because the competition has higher hashrate), all those maxed out settings are not compatible anymore, hence, the stability issues.