Aircraft performance fall off with Win 7? last call for explanation

[Pugo3]

Originally Posted by K_Freddie

There is a difference between the different maths units on the processor. Intel documents this (1000s of pages). if IL2 chooses FPU/GPU on an XP laptop, and MMX/XMM/SEEx on the new laptop, the results depend on the Options used for each maths unit.

I doubt whether UBI or TD have worked on this yet, with regard to C or C++ compilers as these are not the best solutions, other than absolute control of your compilation process - not offered with C or C++ compilers as of yet.

Way beyound my understanding, but basically that different processors can produce different flight interpretations?