all work fine - 3*vega56
"cryptonight_type" : "heavy",
"double_threads" : true,
"gpu_conf" :
[
{ "id" : 0, "intensity" :56, "worksize" : 8, "threads" : 2, "target_temperature" : 59},
{ "id" : 1, "intensity" : 56, "worksize" : 8, "threads" : 2, "target_temperature" : 58},
{ "id" : 2, "intensity" : 56, "worksize" : 8, "threads" : 2, "target_temperature" : 57},
https://image.prntscr.com/image/LbOnbAGJSR65QvOTuaZPGg.jpg
Your can share OverClock with overdriveNtool.
I'm mine with SRBMinerTool but hashrate not good Cryptonight V7 run with 1400, CryptoNight Heavy run 1200
OverDriveNTool
https://ibb.co/dx6Pgx