I'm experiencing visual artifacts (screenshots below; clicking on them will open a larger version but there may be adverts involved). In the first image note the vertical stripes in the brown ground cover. In the second note the large black/blue area indicating water. These artifacts and others randomly flash across the screen. Often vegetation will display red flashing squares. There are times when it's more frequent. Rendering options are set to minimal--Particle systems and 3d clouds are disabled. Shader effects can be set anywhere from 0 to 5. It doesn't seem to make any difference. The artifacts are more common when ALS or Rembrandt is enabled. (Actually, ALS and Rembrandt make FGFS almost unusable for me--they just eat fps--probably because I'm using a 32" monitor. Windowing FGFS to a smaller size helps but still not enough to use ALS.) Though, oddly, if I enable ALS and then disable it, it seems to temporarily diminish the occurrence of the artifacts. My gut feeling is that this has something to do with transparencies and/or blending of textures in the scene or perhaps LODs and is probably due to my graphics card. I'm hoping I'm wrong, though, because an upgraded GPU isn't in my near future. Any thoughts as to causes or work-arounds?
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Current FGFS: 2018.2.1
Linux Version: Mint 18 Cinnamon
Skylake Desktop Processor: i5-6600 3.3-3.9 GHz 4-core (Intel HD 530)
Video card w/ integrated: Nvidia GTX 1050 (using Nvidia 384.111 0ubuntu0.16.04.01 driver)