UnrealEngineLauncher slows the editor down

Development Programming & Scripting C++
, , ,
1

I noticed that UnrealEngineLauncher slows the editor’s FPS from ~37 FPS to ~17 FPS on my MacBook. (UE4 4.2.1-release i5 MacBookPro 16gb ram)

But the Editor constantly re-opens the Launcher. I like the marketplace in the launcher, but if it has this big of an impact on FPS, I don’t want it running unless I specifically open it. So I made this patch if anyone else doesn’t like UE4 opening up the Launcher after they close it.

https://github.com/-wallis/UnrealEngine/commit/95f2d511898dd1c019ddf597515432da0d175abf

P.S. Those are the FPS rates with all windows closed, including the toolbar, except the OutputLog so I can read the hitches.

2

It would be nice to have an option in the editor preferences to disable the launcher.

Nice job!

3

Hi smilingrob,

Can you please make a post on the answerhub at http://answers.unrealengine.com so we can assist you? Thank you!

4

I’ll append to two answers, one for the low perf, and one for disabling the Launcher.

Since those questions already exist.

5

We made a launcher app with Slate, and it shows the same problem… using 16% of CPU time on a beefy rig. Heading into StandaloneRenderer (which is the same renderer the Epic Launcher uses) and forcing vsync to be enabled has lowered CPU by 15.8% to 0.2%.