One thing I have learned over the years od riding CTX is that you need a slightly higher edge angle when at higher speed if your not flat base bombing. I ride it a few ways.... Flat based straight lining going super fast. Flat base straight with skidded turns to burn off speed. Carving with over 20 degreeish edge angle. And combos of all of them...... Mines a kt22 but same profiles on base and edge.
Either way you look at it though, you will never beat the stability of a longer cambered board at high speeds