Operating system: Linux-4.15.0-112-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.57
Broken: version: 2.90.0 Beta, branch: master, commit date: 2020-08-17 19:04, hash: rBe157573fab2a
Short description of error
Blender 2.90 can create Full Copy scene only with few low poly objects in compare with 2.83 that execute this command with High Poly array of objects in the moment.
Exact steps for others to reproduce the error
Open/Create blendfile with objects in sum of ~ 50 000 faces. Create New Scene - Full Copy.