Some times the 737ngx freeze in flight. No mouse action posible and the screen is light grey. I have to restart again. This happens several times and I don´t no what is wrong. Also in landing LOWI the trottle will not decrease to 22% its hang on 32%. The LOWI strip is short so its diffiicult to stop with to much power. Prosessor I7 and a fast system with lot of framerate. How can help me