Thanks 
Jacky my specs are i5 2500, 8gb 1600mhz and a geforce gtx 760, I’m averaging 25fps at 1080p but there is no optimization at all, the majority of the models doesn’t have any LOD, also no culling, I’ll try reimporting with LODs from Speedtree soon
Liondog basically yes, there are a couple of default trees there and most of the new ones were made modifying existing ones, bromeliads I remember doing from scratch multiplying individual leaf meshes, but for this plant for instance I used as a palm tree to start it:
and the real thing (not the same pic I used for the texture):
I’m don’t know how to measure the landscape in units but the forest is just a small stripe
Also I forgot about the little fern clumps on the ground (screen #7 under the big ferns), their texture is by Wolverine on Deviantart, til next week I might be able to change every of them with my own, then on to making more varieties 