Minign in dualmode gives an extrem slowdown of ETH mining ( 2x 380x)

single minin ETH gibes about 42Mhs
ind dual mode 12 MHS

what can be problem ?

thx for Help

see config.......


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 eu1.ethermine.org:4444 -ewal 0xxxxxxxxxxxxxxxxxxxx.xxxxx -epsw x -dpool stratum+tcp://sia-eu1.nanopool.org:7777 -dwal exxxxxxxxxxxxxxxxxxxxxxxxx7b4e776f70359/xxxxxxx/xxx@xxxi.xxxx.de -dcoin sia -dcri 120

>>>>>>>
    Claymore's Dual ETH + DCR/SC/LBC/PASC GPU Miner v9.3      ║
╚════════════════════════════════════════════════════════════════╝

ETH: 1 pool is specified
Main Ethereum pool is eu1.ethermine.org:4444
SC: 1 pool is specified
Main Siacoin pool is sia-eu1.nanopool.org:7777

Catalyst 15.12 is REQUIRED for best performance and compatibility
For Polaris cards, use latest drivers
At least 16 GB of Virtual Memory is required for multi-GPU systems
Make sure you defined GPU_MAX_ALLOC_PERCENT 100
Be careful with overclocking, use default clocks for first tests
Press "s" for current statistics, "0".."9" to turn on/off cards, "r" to reload pools, "e" or "d" to select current pool
OpenCL initializing...

AMD Cards available: 2
GPU #0: Tonga, 4096 MB available, 32 compute units
GPU #0 recognized as Radeon 380X
GPU #1: Tonga, 4096 MB available, 32 compute units
GPU #1 recognized as Radeon 380X
POOL/SOLO version
GPU #0: algorithm ASM
GPU #1: algorithm ASM
No NVIDIA CUDA GPUs detected.
Total cards: 2
ETH: Stratum - connecting to 'eu1.ethermine.org' <94.23.28.180> port 4444
ETH: Stratum - Connected (eu1.ethermine.org:4444)
DUAL MINING MODE ENABLED: ETHEREUM+SIACOIN
 SC: Stratum - connecting to 'sia-eu1.nanopool.org' <198.251.88.16> port 7777
ETH: eth-proxy stratum mode
Watchdog enabled
Remote management (READ-ONLY MODE) is enabled on port 3333

>>>>
GPU0 t=87C fan=68%, GPU1 t=75C fan=51%
ETH: 05/22/17-21:06:56 - New job from eu1.ethermine.org:4444
ETH - Total Speed: 12.073 Mh/s, Total Shares: 4, Rejected: 0, Time: 00:20
ETH: GPU0 5.841 Mh/s, GPU1 6.231 Mh/s
 SC - Total Speed: 1448.732 Mh/s, Total Shares: 10, Rejected: 0
 SC: GPU0 700.974 Mh/s, GPU1 747.758 Mh/s
ETH: 05/22/17-21:07:02 - New job from eu1.ethermine.org:4444
ETH - Total Speed: 11.967 Mh/s, Total Shares: 4, Rejected: 0, Time: 00:20
ETH: GPU0 5.855 Mh/s, GPU1 6.112 Mh/s
 SC - Total Speed: 1436.069 Mh/s, Total Shares: 10, Rejected: 0
 SC: GPU0 702.635 Mh/s, GPU1 733.434 Mh/s
ETH: 05/22/17-21:07:04 - New job from eu1.ethermine.org:4444
ETH - Total Speed: 12.077 Mh/s, Total Shares: 4, Rejected: 0, Time: 00:20
ETH: GPU0 5.861 Mh/s, GPU1 6.216 Mh/s
 SC - Total Speed: 1449.299 Mh/s, Total Shares: 10, Rejected: 0
 SC: GPU0 703.376 Mh/s, GPU1 745.923 Mh/s

using Crimson 15.12 - cant find settings in windows to set Virtual Mem to 16 GB -

All Claymore´s (ETH / ZEC / XMR) Miners are crashing on my windows 10 machine. other miners work ?
Any Idea? anybody ?

setting:
windows 10 / intel core 2 DUO E8400 / 4 GB RAM
2 X SAPHIRE AMD GPU
SAPPHIRE NITRO R9 380X 4GB GDDR5 PCI-E DL-DVI-I DL

https://dl.dropboxusercontent.com/u/8367155/IMG_1154.jpg