Suggest you do the following:
1- Open the AMD Vision Control Center.
2- Go to :Gaming then 3d Applications.
3- Set Anti-Aliasing to "Overide Application Settings". Plus set level to 4X.
4- Then set Anti-Aliasing Mode to "Super Sample AA"
These settings gave me super clear flicker free textures using an AMD Radeon HD-7750.
Martiro
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------You have a conflict with an add-on scenery which could be far from Seattle. Suggest you disable recently added sceneries one at a time until you eliminate the problemMariro.