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Troubleshooting performance issues: Difference between revisions
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→Performance factors: info from http://forum.flightgear.org/viewtopic.php?f=37&t=23128&p=210273#p210271
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== Performance factors == | == Performance factors == | ||
=== Hardware setup === | |||
*'''Problematic video cards''': There is a list of [[Problematic Video Cards]]. Check that yours is not there. | |||
*'''Integrated video cards''': These are probably in the above list, but sometimes you can play with them, reducing "eye candy". Two of these cards are Intel HD graphics 3000 and 4000. With integrated video cards it's also generally possible to specify the amount of system memory to be used as video RAM (VRAM). | |||
*'''Video screen''': Actually, this does not affect performance. The problem though is that with a large screen you might want to use higher resolution, but that ''will'' affect performance. | |||
=== Operating system and driver setup === | === Operating system and driver setup === | ||
*'''Background programs''': Check that your operating system is not cluttered by unnecessary programs running in the background. Have as little programs running as possible. | *'''Background programs''': Check that your operating system is not cluttered by unnecessary programs running in the background. Have as little programs running as possible. | ||
* '''Maximize power performance settings''': If you're running a laptop, chances are your system defaults to a power-saving mode, even with the laptop plugged in. Adjust these settings to maximal power while running FlightGear. | * '''Maximize power performance settings''': If you're running a laptop, chances are your system defaults to a power-saving mode, even with the laptop plugged in. Adjust these settings to maximal power while running FlightGear. | ||
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* '''Rembrandt''': If you enabled the [[Project Rembrandt|Rembrandt renderer]], well, you knew that's experimental. First of all, try to change shadows settings, and consider disabling them. If it's not enough, disable Rembrandt altogether. To check if it's enabled: last tab, ''Advanced > Rendering >'' uncheck ''Rembrandt''. | * '''Rembrandt''': If you enabled the [[Project Rembrandt|Rembrandt renderer]], well, you knew that's experimental. First of all, try to change shadows settings, and consider disabling them. If it's not enough, disable Rembrandt altogether. To check if it's enabled: last tab, ''Advanced > Rendering >'' uncheck ''Rembrandt''. | ||
* '''3D Clouds''': One of the worst offenders in terms of performance impact. Disable them. (in-sim too) | * '''3D Clouds''': One of the worst offenders in terms of performance impact. Disable them. (in-sim too) | ||
* '''Screen resolution''': The amount of pixels that the graphics card must draw affects performance, so reducing resolution can often help. | |||
* '''Shading''': Set to "flat" | * '''Shading''': Set to "flat" | ||
* '''Fog''': set to "nicest" or "disabled" | * '''Fog''': set to "nicest" or "disabled" | ||