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

[IceFire]

Originally Posted by K_Freddie

I'm not sure how the physics are modeled but you might find that your new CPU/GPU has more 'maths options' (MMX/XMM/SSEx and whatever's on the GPU) to choose from, as compared to XP on the older laptop.

If the game is using these options for physics calculations, and its different to what it was on your old XP laptop.. the results will be different. What you getting now is probably what the devs intended the physics to be like.

A slight adjustment in your flying skills would help you re-enjoy the game again.

The physics might be calculated faster leading to faster frame rates only. You can't take shortcuts here with a slower or faster CPU... otherwise multiplayer would be a write-off. So no... not likely to be the case.

Some games benefit from having the extra GPU backing to produce visual effects related to physics (i.e. StarCraft II will show more debris being tossed around and interacting with the environment) but the gameplay physics have to be absolutely, 100%, identical. I'm not sure if there is a margin of error here but it would have to be small.

[Derda508]

Maybe a very stupid question, if so I apologize.
Are you really sure, you installed the same version of the game (patch) in XP and in Win7?

[Pugo3]

I installed 4.07 from the same install DVD for both computers, and after some time finally patched my later Win 7 set up up to 4.10.1. Being that I noticed the drop off early on while in the familiar 4.07, it doesn't appear to be a error or corrupt install, but thank you.

[sniperton]

Originally Posted by Pugo3

I installed 4.07 from the same install DVD for both computers, and after some time finally patched my later Win 7 set up up to 4.10.1. Being that I noticed the drop off early on while in the familiar 4.07, it doesn't appear to be a error or corrupt install, but thank you.

Is it not due to the changed AI and FM since 4.07 and 4.10.1? Just a question. The 'feel' of the game has changed a lot in the past few years.

[K_Freddie]

Originally Posted by IceFire

The physics might be calculated faster leading to faster frame rates only. You can't take shortcuts here with a slower or faster CPU... otherwise multiplayer would be a write-off. So no... not likely to be the case.

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.

[ElAurens]

Guys, I think Pugo3 is comparing V4.07 with V4.10.1, yes there will be a rather pronounced change in the way that aircraft behave if that is the case.

Pugo, on the deck dogfighting a Ki 43 with a much heavier Corsair is a formula for failure.

[Woke Up Dead]

Originally Posted by ElAurens

Guys, I think Pugo3 is comparing V4.07 with V4.10.1, yes there will be a rather pronounced change in the way that aircraft behave if that is the case.

That's what I thought too, but he also says this: "Being that I noticed the drop off early on while in the familiar 4.07,..."

It's definitely odd, especially when he mentions that it also affects another flight sim on his computer.

Pugo, there was a recent thread here by Horseback with acceleration charts, see if you can replicate some of his results or if you really are 10-15% slower. It won't change your perception of the aircraft feeling worse than before, but at least you'll know you don't have a real disadvantage.

[Pugo3]

Originally Posted by Woke Up Dead

That's what I thought too, but he also says this: "Being that I noticed the drop off early on while in the familiar 4.07,..."

It's definitely odd, especially when he mentions that it also affects another flight sim on his computer.

Pugo, there was a recent thread here by Horseback with acceleration charts, see if you can replicate some of his results or if you really are 10-15% slower. It won't change your perception of the aircraft feeling worse than before, but at least you'll know you don't have a real disadvantage.

Thank you, I will be reloading my Win 7 Prof and all software next week, so I will try this as soon as I'm up & running.

p3

[Pugo3]

Originally Posted by ElAurens

Guys, I think Pugo3 is comparing V4.07 with V4.10.1, yes there will be a rather pronounced change in the way that aircraft behave if that is the case.

Pugo, on the deck dogfighting a Ki 43 with a much heavier Corsair is a formula for failure.

Actually, I made my comparisons with 4.07 on both machines, as it was some time before I jumped to 4.10.1.

It was a learned process, mostly not panicing after getting nailed many times, but you can use those beautiful flaps as you begin a low to medium speed dogfight with a Ki-43, along with the throttle inputs to pull you through. It would most often be a series of roll over/under, canopy rolls, rolling siccisors with sprial towers. You could look for an opportunity and gun the trottle to get the H... out of there if things began to look bleak, then come back in for another go. It is this particular dogfight I most lament losing in the performance difference between computers. [I did mention that the AI are not as agressive and nuanced either, somewhat lackluster and not nearly as aggressive and challenging] Perhpas with Win8 in my coming desktop - I can hope...

[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?