I got the answer From Ubi support. They say to try at first to deselect the epilepsy box in game video configuration, if still not working to reduce the video resolution. Last chance, they say to uninstall game, Steam, Uplay and antivirus and reinstall game, Steam and Uplay. Once working right, to reinstall antivirus. Tonight I'll try with video configurations, but I have to think about it before uninstalling everything. After all, I think that He111 is better than Ju88 as level bomber