If I have only one part in assembly orbiting is smooth and GPU meter shows about 20%. When I put more parts (let say 40 parts) in assembly GPU meter gets down to about 4% and orbiting is slow/lagging. I used before SW2017 and with that assemblies (several hundreds parts) worked fine, orbiting was smooth and no lagging but with SW2019 I cannot orbit (extremely slow) these same assemblies anymore. Is there some settings that I have missed?

HP ZBook 15 G3

i7-6820HQ

Quadro M2000M