Mesh Priority

An area to discuss scenery addons for virtual NZ

Postby PiperDriver » Sat Sep 13, 2008 11:27 am

Whats the ideal mesh setup for NZ. My setup runs like rubbish despite putting a ATI 3460 or 3640.

Even snowmans scenery runs slow.

What do i do???
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Postby toprob » Sat Sep 13, 2008 11:33 am

I don't think mesh priority makes any difference to performance. FS will normally display the best mesh available, no matter what priority. Mesh itself doesn't really affect performance in my experience, the most likely culprits are graphics card settings, RAM and video bottlenecks, and slow processors.
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Postby creator2003 » Sat Sep 13, 2008 12:11 pm

75 meter or 20meter ,also i think mesh does effect flps as it will be drawing more polys to smooth out the low res meshes ie like the 20meter or if you in FSX were to use 1meter 10 meter or any of the other options

in X i use 19 as my setting with the 20 meter installed ,in fs9 i used 20 meter and found some had had heavy loads "flps " when using the 20 to the 75 and one guy reverting back to 75 after getting the 20m addon payware ..

QUOTE
Whats the ideal mesh setup for NZ. My setup runs like rubbish despite putting a ATI 3460 or 3640[/quote]
mesh should i think if you have a addon go under the addon scenery in the scenery library list .. if you have topo that should be right above it before the addon scenery one then all your snowmans scenerys above the addon scenery library listing ...
hope this helps
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Postby toprob » Sat Sep 13, 2008 1:04 pm

creator2003 wrote:
QUOTE (creator2003 @ Sep 13 2008, 12:11 PM) <{POST_SNAPBACK}>
75 meter or 20meter ,also i think mesh does effect flps as it will be drawing more polys to smooth out the low res meshes ie like the 20meter or if you in FSX were to use 1meter 10 meter or any of the other options


I didn't mean to say that the mesh doesn't affect performance, just that it doesn't affect it as much as other issues. What FS does -- such as mesh display etc -- it does very well, what really affects performance is the non-FS stuff -- trying to make the sim do too much for your system, limited RAM and graphics memory, trying to run a flash graphics card without a matching CPU.

EDIT: a quick expansion of this -- there is a difference between what FS does to display certain elements, such as mesh, and how this is actually implemented in your particular computer. Mesh is highly optimised in FS, particularly with FS2004 and FSX. What will limit your system is a combination of factors which overload one or more part of your system. There is only a certain amount of work your processor can do, for instance, and once it gets overloaded the only thing you can do is to lower some settings which affect CPU performance. Same with the graphics system -- there's speed, and then there's available memory, and both are limited, and have a different affect on the sim. The fact that your graphics card can't keep up with the geometry the sim is trying to feed it is different from overloading the graphics memory with too many textures. You really need to figure out exactly what the limiting factor is -- just saying your system is too slow doesn't give you any clue as to where the bottleneck is.

I know it would be nice to think that changing the priority of scenery will help with performance, but it just doesn't work that way. I've done some experimenting with mesh priority, including putting a 75 metre mesh at a high priority and the 20 metre mesh low (that is, at the top of the list in the Scenery Library) and FS still displays the 20 metre mesh with absolutely no change in framerates on my limited system. I would certainly encourage people to experiment with this, because your own CPU/graphics/settings combo and your own idea of what is good performance is very subjective.
Last edited by toprob on Sat Sep 13, 2008 1:12 pm, edited 1 time in total.
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