Water effects, Shader and REX settings

Hello guys,due to some limitations in performance I need to downgrade the water effects in FSX from Low 2.x to High 1.x.Plus, I have tried to disable the shader command in the FSX.cfg: ALLOW_SHADER_30=0Now the question. Using those settings can I (or not) take advantage of the beautiful water effects by REX? If yes, are they far better (or not) with the Low 2.x than High 1.x setting in FSX menu? Or will I have only a normal, steady and anonymous blue texture without any reflection?Thanks for your replies. Bye.