Let me go ahead and apologize up front.  I'm sure I'm about to ask a really dumb question, but here goes...

Before spending a tremendous amount of money building a mining rig, I thought I'd try to learn a little bit about mining.  So, I purchased a Sapphire 11265-07-20G Radeon NITRO+ RX 580 4GB (Elpida-Memory) for my Windows 10 machine.  (I intended to run it on my Linux server, but the power supply isn't large enough.)

When attempting to mine Ethereum using the "Claymore's Dual Ethereum + Decred/Siacoin/Lbry/Pascal AMD+NVIDIA GPU Miner", I get what I perceive to be very low hash rates. 

This is what the mining window looks like:


AMD Cards available: 1
GPU #0: Ellesmere, 4096 MB available, 36 compute units
GPU #0 recognized as Radeon RX 480/580
POOL/SOLO version
GPU #0: algorithm ASM
No NVIDIA CUDA GPUs detected.
Total cards: 1
ETH: Stratum - connecting to 'eth-eu1.nanopool.org' <213.32.74.157> port 9999
ETHEREUM-ONLY MINING MODE ENABLED (-mode 1)
ETH: eth-proxy stratum mode
Watchdog enabled
Remote management (READ-ONLY MODE) is enabled on port 3333

ETH: Stratum - Connected (eth-eu1.nanopool.org:9999)
ETH: Authorized
Setting DAG epoch #150...
ETH: 11/10/17-08:27:24 - New job from eth-eu1.nanopool.org:9999
ETH - Total Speed: 0.000 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
ETH: GPU0 0.000 Mh/s
Setting DAG epoch #150 for GPU0
Create GPU buffer for GPU0
ETH: 11/10/17-08:27:28 - New job from eth-eu1.nanopool.org:9999
ETH - Total Speed: 0.000 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
ETH: GPU0 0.000 Mh/s
ETH: 11/10/17-08:27:42 - New job from eth-eu1.nanopool.org:9999
ETH - Total Speed: 0.000 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
ETH: GPU0 0.000 Mh/s
GPU0 DAG creation time - 17145 ms
Setting DAG epoch #150 for GPU0 done
ETH: 11/10/17-08:27:48 - New job from eth-eu1.nanopool.org:9999
ETH - Total Speed: 1.154 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
ETH: GPU0 1.154 Mh/s
ETH: 11/10/17-08:28:03 - New job from eth-eu1.nanopool.org:9999
ETH - Total Speed: 4.128 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
ETH: GPU0 4.128 Mh/s
ETH: 11/10/17-08:28:08 - New job from eth-eu1.nanopool.org:9999
ETH - Total Speed: 4.128 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
ETH: GPU0 4.128 Mh/s
ETH: 11/10/17-08:28:16 - New job from eth-eu1.nanopool.org:9999
ETH - Total Speed: 4.128 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
ETH: GPU0 4.128 Mh/s


From all accounts, I "think" I should be getting around 25 Mh/s, but of course I'm no where near that.

Also, for reference, this is what my startup batch file looks like:



setx GPU_FORCE_64BIT_PTR 0
setx GPU_MAX_HEAP_SIZE 100
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_SINGLE_ALLOC_PERCENT 100

EthDcrMiner64.exe -epool eth-eu1.nanopool.org:9999 -ewal 0x7750c68f401341971f29de73f497f6c1872e80bc/njnear/xxxxxx@gmail.com -epsw x -mode 1 -ftime 10



I've gone through several cycles of GPU BIOS updates, though I don't think that is the problem.  The BIOS updates seem to be geared more toward "tweaking" performance on the high end and I was getting really poor hash rates even with the stock BIOS.  Could I ask ask someone point me in the right direction?  I feel like I'm missing a critical step here but I don't see what it is.