For those who see FPS difrence betwen 1.15 and 1.15.2 Especially at farp's and airports when more helicopters are visible once. I've add lods (level of details) for helicopters at distance 1km and more. Also reworked hesco barriers lods.
There were tutorial at eech central. But its simplier than it looks. I learned by myself and at begining asking more experienced people like Firebird and Thealx. If you need help ask me priv or skype I can help.
Btw how did you learn editing scene?You have used some tutorials, guides?