Strange problem here, I have single RX580 in PC, but when I try to mine with it, it crashes.

When I start miner with -l option I get this:

"Phoenix Miner 5.7b Windows/msvc - Release build
-----------------------------------------------

No CUDA driver found
OpenCL driver version: 21.6-7.x
Available GPUs for mining:
GPU1: Radeon RX 580 Series (pcie 1), OpenCL 2.0, 4 GB VRAM, 36 CUs
GPU2: Radeon RX 580 Series (pcie 1), OpenCL 2.0, 4 GB VRAM, 36 CUs
"

so miner sees single GPU as 2 devices...I can prevent crash if i put "-gpus 1" or "_gpus 2" option,
but then I only get 15MH/s (half the normal hashrate). I tried DDU and various other ways to clean
drivers, but nothing helps, its probably some registry leftover.

Ideas?