I can't explain why but the 64 bit MPC Home Cinema on Windows 764 bit works much better than the 32 bit MPC on windows 7 32 bit. Both are on the same computer with exactly the same setup. I just migrated to 64 bit including all my files programs and junk.
Among the improvements are MPC launches faster. MPC doesn't hang for a while when using EVR. MPC uses less CPU power. I can now view HD movies in my lowest clock speed. 1.6GHz.