I optiminer miner does not work, 2 cards do not want to engage in mining that can be 
With optiminer there's always a card hanging and I don't want to babysit rigs. CM 11.1 no problems!
Optiminer 1.6 has been rock solid for days on my Ubuntu 14.04/fglrx box. One of my R9 380's was hanging at 1550 memory clock, but has been fine at 1500.
So if optiminer stresses the hardware more than CM, the issue is not with optiminer its your overclocking.
I just don't agree. I'm not over clocking any of my cards (3 Radeon R9 380X and 1 Radeon HD 7870), running Windows 10 using the 15.12 driver. I continue to receive BSOD while running optiminer, or the thread hangs and I must restart the application, this is occurring every 2-3 hours. When optiminer is running, I always get block pixels on my screen too. Maybe optiminer is more stable on Ubuntu than Windows 10, but there is definitely stability issues. I can overclock all my cards by 10% and run Claymore without any issues.
It depends on the components and luck i guess, im running Optiminer on my 270x and 79x0 ones and its really stable.
The speed is great too, getting 200+ sol/s on 270x, compared to 160 on Claymore.
Pretty sure the only ones mining ZEC right now are the Tahiti and Pitcairn GPUs. Since if you got Tonga/Hawaii/Polaris you are most likely back to ETH/ETC mining.
I agree, im doing the same. Running Zec only on cards that cant handle DAG or get too hot for ETH.
As it stands, ETH+Decred or something else is more profitable for the last couple of days, maybe even a week or more.
Even if the speed on ZEC is increased it wont make profits any better i guess.
This thread is specifically concerned with "Claymore's ZCash AMD GPU Miner v11.1 (Windows/Linux)", which doesn't mean that it's the right thread for any post that has the word "Zcash" in it. 
