This is the Readme contents from DXTFixer:
DxtFixerX for FS9 and FSX - neumanix 2012
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This tool fixes the stutters in FS9/FSX caused by dxt3 and dxt5 textures without an active alpha channel.
To just search for bad files without making any changes, check the box that says "Just report bad files".
To fix all faulty files, just leave the box unchecked.
Then click the "Select root folder" button to tell the program from where to start the search.
It will search all the subfolders from there on.
If you select your FS9/FSX root folder, then all your textures will be searched.
After the search is done, the program closes automatically.
Now go read the "log.txt" file that was generated. It contains a report of the faulty files that were found/fixed.
It's perfectly safe to use, as only dxt3 and dxt5 compressed bitmaps will be searched and modified. And they should ALWAYS
have an alpha channel, so you can't do anything to mess up your sim.
Enjoy!
Regards,
Peter Nyman (neumanix)