Guys,
I have updated windows miner. Now it detects (does its best to) AMD OpenCL platform and uses it, and has some memory config detection improvements. Please redownload from the same place and report any further problems you may encounter.
With new miner, my r9 290 GPU usage stays at 100% longer, before it was constantly falling to 0, now it falls to 0 every 30-45 sec.(and then back to 100)
When i was changing GPU_MAX_HEAP_SIZE before, when i runed your miner the 280x memory value was also changing now its:
280x: 3059744768
290: 3221225472
Is there maybe a way to get the 280x to the 3221225472 mem?