I just 'converted' to XPL after almost 25 years of MSFS, and so far am very happy with my experience. However, there is a weird problem I am facing which seems unlikely to be a driver issue, because I never had this issue on the same hardware with FSX / DirectX. I think it is either a XPL specific issue or an OpenGL aspect.
Please reference the video recorded (link below) you will see what I mean when you look at the right side before 00:08 mark, there is a gray colored building which displays the shimmering effect. I can even see the triangular polys. After 00:09 mark, the view will switch and you will see most of the buildings in the bottom of the screen shimmering / flickering this way. I have seen the issue is specific to buildings and tree textures.
I am running on AMD FX6300 processor with AMD Radeon R9 380 GPU. AMD driver version is 15.300.1025.1001 (latest stable from AMD) and as I mentioned I never had this flickering issue with FSX and DirectX.
I have tested with older drivers from AMD as well, and I have also tested plain vanilla XPL10 installation (without any plugins installed) and the effect is the same. I have attached log.txt as well.
The video is here: http://1drv.ms/1moWgqV
Would appreciate any help on this matter!