Managed to sort out a work around for now…
Firstly updating to genoil-zec-miner-0.4.1 with SilentArmy added has helped some what… although now and then 1 GPU would stop mining (I presume this is to do with SA crashing and not restarting a 2nd instance).
So I created a scheduled task to restart the miner ever 30min.
Details here:
Create a new batch file with the following info (called mine Reload.bat) -
taskkill /f /im genoil.exe
start Miner.bat
In the Miner.bat add:
genoil.exe -c eu1-zcash.flypool.org:3333 -u WALLET.RIG -p z
Then in Task Scheduler, set up a task to re-occur every 30 minutes, setting it to launch the Reload.bat file.
Bonus Info thanks to @boysie123:
WattTool profile for RX480 card:
[General]
NoGUI=0
[Adapter]
Index=0
[GPU]
Mode=Manual
P1_CLK=455
P1_VID=800
P2_CLK=690
P2_VID=800
P3_CLK=815
P3_VID=800
P4_CLK=865
P4_VID=800
P5_CLK=900
P5_VID=800
P6_CLK=935
P6_VID=800
P7_CLK=960
P7_VID=800
[Memory]
Mode=Manual
P1_CLK=1500
P1_VID=800
[Fan]
Mode=Manual
MinRPM=2000
MaxRPM=3000
TargetTemp=75
[Power]
Mode=Manual
MaxTemp=80
PowerTarget=0
[I2C]
LLC=1
PhaseGain=000000
CurrentScale=A0
VoltageOffset=0