I'm willing to bet P3D V2.2 (or soon to be 2.3) will be able to handle full PAX with everything else ... plenty of free VAS and DX11 operates much faster.  Also, if you use DX11 only texture compression formats BC6H and BC7 it will be considerably faster ... currently it appears your DDS files are based on the older FSX DXT1-DXT5 compression.  BC6H and BC7 will operate faster and look better and use less VAS.

Something to consider for future P3D V2.x versions.

Cheers, Rob.