Thanks, Guys. I'll put them in the same file to start since they're both small structures, house 1500 sq ft living+attached garage, covered front and back porch. Garage/Barn is 650 sqft, insulated and climate controlled. House is incredible simple with simple gable roof (barn too). It sounds like it's a function of the file size and computer power.
Barn will be placed so that it blocks the view of the ugly house on the adjacent lot (zoned 5 acre parcels). It's a highly mountainous area of which I have the only lot with a good building area (only 7-14% grade at building site). I want to make the terrain flat under the two structures and 5% grade everywhere else on the site area (approx 1 acre).
So placing both house and garage is helpful for the site plan and terrain views. I don't care about interior details too much. My main goal is to get a complete set of construction documents to be submitted for permit.