There is a graphical issue on the LGV Mediterranée route. The distant tree LODs flicker wildly. Tree LOD pop-in is a problem in itself but would be managable, however the flickering is especially visible and distracting. It happens most at winter conditions (regardless of snow level) but is visible in all seasons. It's very easy to replicate, just start a session on the LGV route in winter and look at the trees that are a bit in the distance. The issue is present basically everywhere on the route. On other routes this hasn't been a problem.