My foliage will not cull since 4.15.0

New project with a single mesh in the foliage from starter pack

Complexity showing foliage way beyond the cull distance

These screen shots were taken at foliage level medium, if i go high i cant even open a window in the editor it grinds my system down so much. If i turn the density to 8 the sparcely populates with grass but i can run it, it puts the grass to the edges of landscape tiles. Ive used both Source and Binary engine with same results.

i7 6700k OC to 4.7ghz
64GB DDR4
Raid 0 SSD
R9 290 GFX