Steps to reproduce :

- create a new project
- import the Standard Assets Example Project https://assetstore.unity.com/packages/essentials/asset-packs/standard-assets-32351
- open any scene "Car" for example
- try to move around the scene, select a few objects, reposition them and the performance in Unity will drop significantly and the console will have D3D11 errors

Assertion failed: D3D11: Failed to create render texture primary DSV (error 0x80070057)

*Note:
This is a regression from 2018.a1. In a1 it works perfectly, but the performance drops in a2.
Changing the API to OpenGLCore improves the performance quite a lot but can still feel stutters.
This was reproduced with other larger projects from the Asset Store.
It seems to be a Windows only issue as OSX works fine.