what are the grass meshes you are using?
did you get create it in SpeedTree also?
Yep, done in speedtree (it’s just some random quads). The movement was done in shader (like Nature Environment in UE4 - Asset Creation - Epic Developer Community Forums)
How is your reflector outside setup to actually influence the interior lighting? I tried to recreate your setup without any actual luck. I used a plane with a full white, highly specular material and pointed a spotlight on it, so that it was very brightly lit. After running lightmass, it actually had no real effect on my inside scene at all. I even tried an emissive material. Do i miss some point here? The only way i found to get planes to influence indirect lighting is, by using LPV realtime-GI, which you aren’t using, as you said.
Mmm, it should be working … Checks if your plane and your spot are static. You can uncheck “Cast Shadow” on the spot too.
Any you could share with us a test scene that reproduces the texture streaming?
It’s really simple : Create a tree with speetree, import in a new ue4 scene, zoom in/out … weird textures 
(not tested in v4.4)
I’m testing the new “capsule-shaped point lights” with lightmass right now. Pretty cool new
http://tof.canardpc.com/preview2/71d2a948-b11a-4d05-b1bf-76769100f219.jpg
