I have found out something interesting. If I open a 2D panel in the VC and put my mouse over it the frames stay at 30 but wenn I move it down from the panel they drop to 20. If I put the mpuse on the panel again the frames rise to 30 again.EDIT:Is there a way to make an inivsible 2D panel wich should overlay the whole VC? Ofcourse it must be able to let klicks trought it. So when you klick on the invisible 2D panel the klick should go throught it on the VC which is behind. Just as an idea

I have found out something interesting. If I open a 2D panel in the VC and put my mouse over it the frames stay at 30 but wenn I move it down from the panel they drop to 20. If I put the mpuse on the panel again the frames rise to 30 again. EDIT: Is there a way to make an inivsible 2D panel wich should overlay the whole VC? Ofcourse it must be able to let klicks trought it. So when you klick on the invisible 2D panel the klick should go throught it on the VC which is behind.Just as an idea

Ahh..sounds good..I could imagine it wouldn't be too difficult to build that...that's just a transparent 2D-Cockpit which has a clicklistener which gets x-y-position and actiontype (e.g.click) and propagates the event to the VC. Maybe an opinion of an experienced fsx addon developer could be very interesting.

Ok...I'm just a bit confused that all addon aircraft (dispite of ifly & pmdg737) run great on addon airports and rex2 environment without any fps-impact on VC when using mouse.Eventually it was also a bit emotional for me that after waiting a long time for this masterpiece which is finally not usable in my case..hope you understand that some frustration arises.I will calm down...and try do other things for a while..maybe I will try again with "sandy bridge E" at the end of the year.

It appears that this issue is more noticeable as the VC becomes more complex, i.e. the more click spots the more of an fps impact there is. How much of an impact is experienced depends on how powerful the computer is. In my case, in the other recently released 737 I only see about a 2-5 fps drop, but I am almost always at 24 - 30 fps (external limiter at 30) so it really isn't noticeable.

Sorry but It is definitely NOT true that every extended Addon-aircraft causes an FPS-loss when the mouse is active in VC. The only ones I know until now are: iFly737 and since yesterday PMDG737NGX Other Addons like LevelD767, PMDG MD-11, QW 757 run always between 28-30fps and don't care about the mouse My System: Phenom II 955 @ 3,7 (stable & cool) & 4GB RAM @ WinXP64 I expect there are some functions in the addons that bare a misconception in the FSX-Core.But everyone has to judge for him/herself if that functions (causing indirectly FPS-loss) in the addon aren't then also another misconception. Maybe there is only a second quadcore necessary to get a smooth experience. (referring to http://forum.avsim.n...pic/341492-fps/)I'm very sad it's unusable for me (10-18fps)..and burned the money Just posted a ticket but don't expect a real solution because also iFly fights for months with this problem without solving it.

Because they can't fix it, it's part of the FSX engine. It will be more noticable on high end aircraft, but will occur on all.

It appears that this issue is more noticeable as the VC becomes more complex, i.e. the more click spots the more of an fps impact there is. How much of an impact is experienced depends on how powerful the computer is. In my case, in the other recently released 737 I only see about a 2-5 fps drop, but I am almost always at 24 - 30 fps (external limiter at 30) so it really isn't noticeable.

OK..if this is the cause, the event listener of the clickspots seem to be inefficient / badly scalable...maybe there are some cyclic state requests for each clickspot per second

Here's a quick explanation of why it happens: Most 3D games that use mouse pointers actually have the pointer in the game "world" as a 3D object. This is called a "hardware cursor" and carries no performance hit with it because it's there in the 3D engine already. FSX does not do this - when you bring the mouse onto the screen in FSX, it's a 2D Windows object overlayed onto the sim's 3D engine. The sim has to perform some very CPU intensive math in order to figure out where in 3D space the mouse pointer is referrencing. It's really poor design on the part of MS/ACES and we complained about it as far back as the development of the 400X. They were going to fix it and add a hardware cursor in SP3 but the studio was shut down before they could do it. We did absolutely everything we could to mitigate it and what I said a while back was that we don't lose half the framerate from it, which I have seen in other addons that don't apply the tricks we've learned over the years. The effect *is* there even with default planes, I see it here (use FRAPS's graphing function that displays the FPS out to many decimal places). It's just that those VCs are much less complex and the system isn't working as hard in the first place - it's more visible if you unlock the framerate completely, sometimes if it's limited, the extra processing overhead isn't visible because the CPU isn't at full FSX load.

Maybe you could suggest a good FPS-Monitoring Tool?The external FPSLimiter I'm using is from MarkoLudolph...Can anyone suggest another?

you can add to your aircraft.cfg [TextInfo.2]FrameRate=1,1LockedFrameRate=1,2AverageFrameRate=2,1 it will show min/avg/max. it will capture instantaneous dips and peaks over a sampling period so somewhat useful for debugging fr issues. but advice is don't get too caught up in the numbers. Pat

you can add to your aircraft.cfg [TextInfo.2]FrameRate=1,1LockedFrameRate=1,2AverageFrameRate=2,1 it will show min/avg/max. it will capture instantaneous dips and peaks over a sampling period so somewhat useful for debugging fr issues. but advice is don't get too caught up in the numbers. Pat

Isnt that just an text output of the actual fps?...or does that also limit the fps?

Not a real solution, but a bit better performance I got by:

• further overclocking my Phenom II 955 from 3.7 to 3.8
• setting autogen to sparse
• reducing cloud draw distance to 60 miles
• disabling mouse shadow and desktop background (Actually don't really think that helps..seems to be rather hocus-pocus)

So now I get 18-21 FPS so turning @ VC is not smooth but stuttering and taxiing with 16-18fps really hurts..What a pity I'm really curious whether the SandyBridge E (8-core) will be able to get 30fps in the VC.At the earliest that can be tested at the end of the year.

I just move my mouse pointer over to the second monitor and the frames go right back up. I thre the CDU over there now too.....

My issue is actually weird.... in Windowed Mode...i can't get more than 20 FPS locked..no matter what i do. After i switch to Full Screen...i get 30 FPS locked and no slow downs at all...thing is i can't use any app if im flying on windowed mode. Tried everything...even a second Monitor

Always had a suspicion it was an inherent FSX trait. Fs2004 never displayed such nasty mouse behavior.It sure helps having multiple monitor to store the mouse in. Think someone could degutt FSX and fix the problem but then again, were would they stop?

Actually, it did. On my Core 2 system the effect was horrible in complex add ons.