Help with large environments. Workflow too slow! [Solved but other suggestions welcome]

jsdaz_5811013940

Just purchased Highlands here at DAZ. Beautiful environment. But once loaded, my workflow slows to a crawl. Just selecting the forearm of a G8 model takes five seconds, with preview set to lit wireframe!. What can I do to speed up the workflow. Sure I can clothe and pose first then merge the scenes later, but I still have to adjust the characters' positions on uneven terrain. Even that takes a mind-numbingly long time.

I am running a good rig, Win 10, 4-Core i7 3.5Ghz, 32GB RAM, 1080TI, M.2 drive on the PCI bus.

Help!

jsdaz_5811013940

Playing around I found an answer. The grass in the scene is thousands of instances of clumps of grass. Hiding the grass sped up the workflow spectacularly. So much that I can work with preview set to Iray. Nice