Claude Troncy

Yes you are right the intermal limiter loose performance in FPS, but not in the process of rendering texture in the distance. The problem with the external limiter, is that it put the main thread in a sleep mode to maintain the FPS. Unfortunately the time passed in the sleep is not use for rendering the texture, so that generates delay in the texture display.... that's what I understand in the Beau Hollis response on the LM forum. Cheers Claude

Hello, Beau Hollis from LM gave me the explanation. http://www.prepar3d.com/forum/viewtopic.php?f=6312&t=120133&p=139733#p139733 Cheers Claude

So if I look at the GPU usage.... - With external limiter 30 FPS, internal unlimited --- No stutters, and sim very fluid ---- GPU is about 55% -- texture displayed with delay . - With no external limiter, internal limiter 33FPS --- microstutters - GPU is about 55% --- texture displayed with no delay. - With no external limiter, internal unlimited --- microstutters - GPU 98% --- texture displayed with no delay More strange. - With external limiter set to 30FPS, internal to 33FPS ---- No stutters - GPU 55% ---- Texture displayed with no delay. So to have both limiters seems the solution except that with the 737NGX, the internal limiter ask to many cpu to make it's job, and the FPS is below 30FPS... And stutters. Claude

Salut Massimo, Yes, it was set to 1 in NI. A question... are you using a fps limiter ? When I look to your config, the only difference with mine is mainly the GPU. What i do not clearly understand is the negative effect on texture loading when an external limiter is used. Cheers Claude

Hi AnkH I already had the AM set to 85. This is the only tweak in my cfg file. I tried TEXTURE_BANDWITH_MULT with a value of 1800, but no change in stutters. The only thing that works for me to get rid of microstutters, is the external limiter, with the disadventage of the delayed texture loading problem. Merci Claude

Hi AnkH, Thanks for your answer, I think you are right. Using a higher cutoff like 60FPS supress the behavior of slow loading texture. That mean that on my config the external limiter slows the process of rendering terrain. I searched how an external limiter works, and in FSX (I think it is the same in P3D) it slows down the main thread by putting it in sleep mode. That look strange to me but that could explain why some processes in charge of rendering terrain and related to the main thread are delayed. In fact when the textures are displayed(with delay) the plane is at a short distance of them and they seems to popup. So I have to choose texture popup or stutters :smile: May be i will try to post on the LM forum to see if someone of their team has another explanation. Cheers Claude

Bonjour, My PC... 4790K OC4.7ghz 780GTX W7 EIZO(60hz) I am interested to have advices about the relation between external limiter and texture loading. - When using external limiter (30FPS) (I tried 4 different ones), I can stop microstutters in turn and when panning.... But the textures are displayed with delay, and it looks like if they popup just in front of the plane. - When not using the external limiter, I do not have the texture loading problem, they are displayed before, at a long distance in front of the plane, and the popup is imperceptible.. -When using internal limiter, no problem the texture are displayed correctly... But the overhead produced by the internal limiter makes my FPS dropped, and I am under 30FPS (using NGX) and again stutters are here. I know some experts on this forum who certainly have an idea of what could explain the relation between the speed of texture loadind and external limiter. Thanks in advance Cheers Claude

Thanks Zoran

Hi Zoran, With the last fix, it is a lot better, but I find the texture sharpening very slow. it looks like texture popup when they suddendly get crisp. So my question is how did you revert to the old system ? I would like to be sure. Do you get rid of the new FTX Central by just installing old ORBXLIB ? Did you reinstall all the textures (FTX GLOBAL) As the problem seems to be in relation with the new LCLOOKUP, do I have to reinstall ORBX Landclass. It is very difficult to understand the interaction... In fact ist is very blurry for me :smile: Thank in advance for your help. Cheers Claude

It's me :smile: I never had problem using it with FSX or FSXSE, but with my configuration, it doesn't work with P3D. Who knows why ? But I know that flightsim is not an exact science. This afternoon I tried several situations with the different limiters, and for my config it is RadeonPro which give me the smoothest experience in turn and panning. Cheers Claude

Hello, It seems that nobody experiences the same behavior with the limiters. For me when using the 737NGX, whithout a limiter, I am always between 30 and 40 FPS, when using the internal limiter to 33 as recommended, then the FPS dropped down to around 27. So I have stutters. I think it works when basically you use a plane that doesn't eat a lot of CPU, and your FPS is around 60. Why the NVI limiter works in FSX but not in P3D (in my config W7 780GTX), that' a mystery for me. I never tried DXTory, because I thought it was not working in Fullscreen. I will try. Thanks you all for your advice. Best regard Claude

Hi Sethos1988, Thank you very much for your quick answer. I tested in the past the RivaTuner Statistics Server. I have just now made a new test with P3DV3, and yes it is very good. The only problem is I am not able to have the FPS displayed on the screen if MSIAfterburner is not launched. In the past I could not find the standalone version on the web. Have you an idea where I can find it. Thanks Claude

Bonjour, P3D V3.3 GTX780 The only way to get rid of microstutter particulary when panning around as I do not have a 30hz capable monitor is to use RadeonPro to limit FPS. In NVI the framerate limiter doesn't work and I do not undestand why. I cannot use the internal limiter as it seems to be bugged. Example: 1 Situation LFPO on ground, 737NGX, with the internal frame rate limiter set to unlimited my FPS is 40. 2 If I set the internal limiter to 60 then the FPS drop down to 28 ! Strange, One would expect that it remains to 40... But no. Is there a logical explanation to that behavior? Does anybody know a solution other than a 30hz monitor or RadeonPro tool to limit the framerate. Thanks Best regards Claude

Yes it was in stepped mode. I did not remember that I left it like that after creating some camera view using LLC. Now everything is smooth. Sorry... May be to have a reminder in the shortcut control dialog one day.... :smile: Cheers Claude

I perfectly understand the problem with P3D. One thing is the transition between camera is very smooth. I only have the problem when using the shortcuts in live camera controls using a button or a key. Certainly the process is different in this case Claude PS I do not have P3D V2 to compare