Hi Everyone
Finaly, after severals month, i resolved my problem posted in Febuary.
I don’t know exactly how, or what i does, but MFDE 0.6.1.1 works now, in standalone, without windowed mode, (55/65 fps)
In the last try to resolve it, i replace some old Visual C++ installations (2005, 2010, 2013…) with the newest 2015 version.
I also disable the internal graphic card (Intel HD) and use only my GTX 970 and Display Link for the USB MFD Screens.
I reinstall (for the almost 20th time) MFDE and suddenly, it works.
Thanks to all for the help, and i hope my solution could help some of you
Long life to Falcon BMS and fly safe !