I need a little help....

I have a GPU miner with 2 Radeon R9 295x2 cards ( 4 GPU cores total )

I'm running Ubuntu 15.04

I can mine just fine using Zogminer and I get 15-16 H/s per GPU core. However, I have not figured out how to overclock my GPUs when Zcash mining - amdconfig -odsc commands do not seem to change the hash output.

The real problem I've run into is a problem when solo mining using zcashd

I use the following command to run zcashd to try and solo mine
 
My zcash.conf file consists of:

I'm hashing with something, more likely the CPU. My motherboard wattage usage goes up, but the GPU's temperatures remain at idle temps and the GPU's power supply also remains at idle wattage

Where is my error.... I'm trying to GPU mine, not CPU mine.

Thank you