Developer Notes

This issue has been closed as 'Won't Fix' due to an extended period of time without updates. If this issue is important to you please let us know by posting on the AnswerHub or UDN, and Epic will re-open the ticket for further review.

Description

Attempting to play in editor, standalone, or VR Preview when a behavior tree that is running is open will cause a significant performance decrease. The framerate drops from ~120 to ~80 fps while the BT is open. Closing the Behavior Tree returns the framerate back to 120.

Found in 4.12 Preview 4. Reproduced in 4.11.2 binary and Main CL 2980114.

Steps to Reproduce

1. Open the attached project
2. Open AI_BT
3. Run VR Preview (Ensure that you are viewing the debug flow on the Behavior Tree)

Result: Notice that the framerate is around 80 fps, instead of the usual 120. Closing the behavior tree will bump the framerate back up.

Expected: Framerate would remain consistent, or not experience such a significant drop.

Have Comments or More Details?

Head over to the existing Questions & Answers thread and let us know what's up.

0
Login to Vote

Won't Fix
ComponentUE - AI
Affects Versions4.114.124.13
CreatedMay 18, 2016
ResolvedJan 11, 2017
UpdatedSep 16, 2019
View Jira Issue