you could try also different values - e.g. 0x9100 or 0x9200. 0x9100 works for me - other 2 values do not It finally works. Using version 0.4 (without the 2 files you posted) it works fine by setting DeviceFeatureLevel to 0x9100 That is also my configuration, 0.4 with 0x9100. So, Bigmuscle, what does setting it to 0x9300, 0x9200, 0x9100 even do, and would setting it to 0x9000, 0x8900, and 0x9400 be something to recommend to those that still have problems?