Hey pilot! have you fix the textures problem? I have kind of the same issue here, download the latest version of this tool, and now I have blurry terrain textures.
I'm running P3D version 3.2, trying to fix it by restoring the shaders but not luck.
I feel like I have to re-install the Sim again, and to be honest that's a pain, sim plus all the add-ons is about 250GB and it takes a lot of time to make it work all good.
Please if anyone have resolve this issue, please can you help me to fix it? Thanks!