Moving the camera around with click-drag in this project during Standalone or in packaged games causes choppy camera movement. This does not occur in standard PIE.

Moving the camera around with click-drag in this project during Standalone or in packaged games causes choppy camera movement. This does not occur in standard PIE.

Test project attached. Notes from user:

Somehow any of the following actions show smooth movement but together it is choppy
-Play in Editor
-Do not click the mouse button
-Disable "Show Souse Cursor"
-Reduce the number of AI
-Do not have AI move around the scene

Reproduced with the attached project in 4.8.3 binary and Main (CL# 2779899)

1. Open the attached project
2. PIE
3. Hold down LMB and move the mouse
4. Quit PIE
5. PIE in Standalone Mode
6. Hold down LMB and move the mouse

Result:
Once the AI starts moving, moving the mouse while holding down LMB causes choppy camera movement in Standalone and packaged games

AI movement disrupts input in standalone mode