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i updated my project from 4.13 to 4.14.3 and see a huge performance drop

i updated my project from 4.13 to 4.14.3 and see a huge performance drop. also when i build the game and test it it has a huge drop as well. it always gets an error (unknown cooking error) when i try to build it out of 4.13. but it builds just fine with 4.14 but takes a huge performance loss. when i compare the projects from 4.13 to 4.14 in editor there is a performance drop in editor as well. any help would be nice!


Product Version: UE 4.14
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asked Jan 12 '17 at 10:14 AM in Packaging & Deployment

randallelliott gravatar image

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Samantha Sutton gravatar image Samantha Sutton ♦♦ STAFF 6 days ago


Could you please upload your output logs if there are any errors, as a .txt file? What platform are you launching your project on? What type of project is it? Do you see this performance drop in regular templates from the engine, such as first person template as well?

Looking forward to hearing back from you, thanks!

randallelliott gravatar image randallelliott 6 days ago

i will try to do this tonight. i am new to packaging so i might not be able to figure out where the output logs are saved. i'll ask you if i can't find it. i'm using windows and packaging for windows too. it is a 3d first person shooter project that i put together over xmas break. i have tried cloning the project while opening it with 4.14, i have tried making a blank project and pasting the content folder into the new project in both 4.13 and 4.14 and see the same problem. i did try a test with building a fresh first person template and that one works fine. i did notice that it caps the fps at 62 fps in my projects and the template so i thought this is normal. i used on begin play execute console command t.MaxFPS 120 and they all go back to 120 fps. the problem occurs when i stream levels out and in it freezes for a while and the fps will return to 120 but when my little AI come out fps drops down to 17 or so. in 4.13 the lowest it gets i think was 65. i'll make a few videos to show what its doing. templates tests work fine so i'm wondering if i have done something wrong. this is a little spoof project where i migrated most of the stuff from my main project and built it into a small game. it is done in blueprints. is it ok to migragte stuff like i have done? when i try to build the game in 4.13 i think i see alot of errors. ill try to upload both output logs. sorry i wrote such a long post...thank you!!

randallelliott gravatar image randallelliott 6 days ago

the 4.13 message log is too big it won't let me upload it

randallelliott gravatar image randallelliott 6 days ago

UATHelper: Packaging (Windows (64-bit)): at Project.Cook(ProjectParams Params) UATHelper: Packaging (Windows (64-bit)): at BuildCookRun.DoBuildCookRun(ProjectParams Params) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.BuildCommand.Execute() UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Automation.Execute(List`1 CommandsToExecute, CaselessDictionary`1 Commands) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Automation.Process(String[] Arguments) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Program.MainProc(Object Param) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.InternalUtils.RunSingleInstance(Func`2 Main, Object Param) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Program.Main() UATHelper: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure) UATHelper: Packaging (Windows (64-bit)): BUILD FAILED PackagingResults:Error: Error Unknown Cook Failure

randallelliott gravatar image randallelliott 6 days ago

here is the end of the 4.13 output log

Samantha Sutton gravatar image Samantha Sutton ♦♦ STAFF yesterday

I need the full log as a .txt file. You should be able to add it to a word document, save it and then upload it as you did before with the 4.14 output logs.

Looking at your 4.14 output logs, everything is building successfully. Do you have any print text logs from your game actually running showing the FPS drop or any performance information?

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