Hardware decode modify function

Hi,
I have three problem :
1. When use hardware decode i not video ram, modify use system ram.
2. Close dxva2 putout with EVR.
3. I sure, use filter activex in IE over 4 FullDH crash, other broswer not crash.
e.g :
[rtsp h264] -> [Intel H264] -> [EVR] -> IE crash, other broswer not.
[rtsp h264] -> [  ffdshow  ] -> [EVR] -> all not crash.
crash message : d3d9.dll

Thanks,