only problem i got was when i used the new claymore-eth-9.5 which u have to enable manually by the options tab on dashboard ... on my side it seemed to work less stable than claymore-eth-9.4 ... so i switched back and now it is stable again.

if your rig crashes really often you probably should ssh into the machine and tail -f the log which is generated by claymore and see what happens when the rig hangs up or restarts ... on my side there was the line "miner thread hang up" or something similar ... (im using the option -logfile ./logfile.log on claymore to get more detailed debug log on a specific file name but for any reason its getting deleted after restart of the miner/rig)