Try --dagintensity 8 (or find the best setting 1 to 9) (short option -K 9)
We have done a change in the threads per block configuration when using dagintensity. This was done to be able to run on higher clocks.
This is my config
-d -K 1 --dagintensity 1 --xintensity 284 -a ethash -H eu1.ethermine.org -p 4444 -r 40 -y 20 -t 120 -W ETH_WALLET -w $rigName -P x --maintenance-wallet MAINTENANCE_WALLET --maintenance-percent 5
As I understood dagintensity should be lower in higher clocks. Has this changed in new version?