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fps drops when mouse over content browser in editor

Hello,

Faced fps drop problem in work project while was working with over 10 actor blueprints. They located in one folder and when this folder is open and mouse located over content browser window fps drops from 100-60 to 15-20.

Steps to reconstruct this effect in clear project(with starter pack):

  1. Create new folder

  2. Create at least 10 new actor blueprints in this folder, add some random static mesh (one will be enough). Duplicating blueprints might not work, only new blueprints.

  3. While folder with 10 actors open, move mouse over content browser, fps should drop.

Video with this effect - https://youtu.be/aGEgJ-KU3kM . Actor blueprints are simply clear blueprints with only 1 static mesh.

Also I have noticed that after project reload folder with actors not affecting on fps. This effect returns if all blueprints were open at least once (no need to keep them open, simply open-close). Fps drop increases after each new blueprint was opened. Folder full of static meshes also have same effect but less noticeable, from 120 to 60 fps.

4.13 version works fine, encountered such effect only in 4.14

My thoughts about this - blueprint thumbnails updating constantly after blueprint was opened at least once.

Product Version: UE 4.14
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asked Jan 31 '17 at 09:34 PM in Bug Reports

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kiyaha_jr
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Hello kiyaha_jr,

Thank you for reporting this issue. You're correct on it being the thumbnails which is good seeing as there is an available workaround. In the Content Browser, select "View Options" at the bottom right and turn off "Real-Time Thumbnails". This should stop all of the framerate drops you're getting from this.

As for the bug itself, I've entered a report for it and you can find that and track its progress here: UE-41434

Have a nice day!

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answered Feb 01 '17 at 10:47 PM

avatar image kiyaha_jr Feb 02 '17 at 09:24 AM

Thank you Matthew! Your workaround helps a lot.

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