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Very large coloured pixels, and fps drops

Graphics issues like: bad framerates, weird colors, OpenGL errors etc. Bad graphics ar usually the result of bad graphics cards or drivers.
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In order to help you, we need to know a lot of information. Make sure to include answers to at least the following questions in your initial post.

- what OS (Windows Xp/Vista, Mac etc.) are you running?
- what FlightGear version do you use?
- what graphics card do you have?
- does the problem occur with any aircraft, at any airport?
- is there any output printed to the console (black window)?
- copy&paste your commandline (tick the "Show commandline box on the last page of FGRun or the "Others" section on the Mac launcher).
- please upload a screenshot of the problem.

If you experience FlightGear crashes, please report a bug using the issue tracker (can be also used for feature requests).
To run FlightGear on old computers with bad OpenGL support, please take a look at this wiki article. If you are seeing corrupted/broken textures, please see this article.

Note: If you did not get a reponse, even after 7 days, you may want to check out the FlightGear mailing lists to ask your question there.

Very large coloured pixels, and fps drops

Postby ImperiumCreed » Sat Feb 13, 2021 8:58 pm

Hello, I just installed FlightGear today and everytime I press "fly" the loading screen looks like this. Most of the time it does not respond and shuts down, but when I do load in I have massive fps drops when looking around. What could be the problem?

I have an AMD RX580 8GB, Ryzen 2600, and 16GB of RAM.
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Re: Very large coloured pixels, and fps drops

Postby Michat » Sat Feb 13, 2021 9:48 pm

Hello, you may need to update AMD drivers.

Not an specific AMD problem. Other Ryzen users are running FG without problems after updating.

Check it and report.
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Re: Very large coloured pixels, and fps drops

Postby WoodSTokk » Sun Feb 14, 2021 1:04 am

Start FG with
Code: Select all

or add it as additional settings in the launcher.
This should help against the fps drop and to see the menu.
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Re: Very large coloured pixels, and fps drops

Postby Husky Dynamics » Sun Feb 14, 2021 2:19 am

The GUI style change is a must for AMD users, otherwise the words on the menu will flicker constantly and be unreadable.

As far as the pixellated loading screen, mine does that as well until I hit the maximize button (I don't start in fullscreen). Then it flips back to normal.
Get my custom FG liveries here (check back often for new stuff):
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