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?

[K_Freddie]

Originally Posted by Pugo3

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

Not that difficult..

If the game sticks to the FPU maths unit through all cpu's, the difference will be slight, maybe barely noticeable, as even the FPU unit is upgraded in next generation chips.

BUT if it now decides to dump using the FPU for faster XMM maths units, the differences might become apparent, as the XMM units (ect) do not conform completely to the original FPU specifications.

The game is written in C/C++ and Java (if I'm not mistaken) and the maths units underlying features would be hidden from the developer, unless he/she specifically gets into the details of each.

This is just speculation... as I think TD does not have access to the engine, and probably only Oleg and the original devs might have these details of what the engine does.