With the latest 126.96.36.199 patch, there is an issue with the clouds getting stuck and flashing on the screen, and this seems to be affecting only owners of GeForce 600, 700 and 900 series GPUs.
According to reports, the affected cards can be the GTX 660, GTX 750, GTX 750 Ti, GTX 760, GTX 770, GTX Titan Black, GTX 950M and the GTX 960M. All those cards are based on the Kepler and Maxwell 1.0 architectures, but there are also reports that the GTX 970 and the GTX 980 Ti do not exhibit this issue, which means that Maxwell 2.0 might be in the clear.
I’m trying to create a detailed Zendesk report to hopefully get this issue fixed as soon as possible, since flying with weather creates an unplayable situation on those cards. If you own any card from the GeForce 600/700/900 series, please report in here whether you are getting this issue or not, along with your current installed driver version. Any help would be greatly appreciated.