u/LarstOfUs

Why the Unreal editor loads over 1500 files on every launch to fill a few dropdown menus (and how to fix it)
▲ 232 r/UnrealEngine5+1 crossposts

Why the Unreal editor loads over 1500 files on every launch to fill a few dropdown menus (and how to fix it)

Hi it's me again, the guy who sped up the Unreal Editor launch by not spawning 38000 tooltips and not opening 5500 files of example content.
Since the editor is still not fast enough for my liking (will it ever?) I started to profile it again and found out that every time you start it, over 1500 files are loaded to fill a few editor dropdown menus 🫠 (which obviously takes some time)
I wrote an article with more details and also a fix: https://larstofus.com/2026/08/16/speeding-up-the-unreal-editor-launch-again-by-not-loading-1585-files/

u/LarstOfUs — 2 days ago

You can speed up Unreal's Message Log immensly

If you work a lot with it you might have noticed that the performance of Unreal's Message Log isn't great, especially if you log a lot of messages. A bit of log spam is often enough to drag the editor down to unusable framerates. Luckily, it's easy to fix and I wrote an article how you can fix it yourself, too 😄 (pull request also linked in the article)

https://larstofus.com/2026/05/28/how-to-make-unreals-message-log-100-times-faster/

u/LarstOfUs — 3 months ago
▲ 2 r/UnrealEngine5+1 crossposts

I was annoyed by some of the issues and shortcomings that Unreal has when it comes to renaming stuff, especially widgets. Sometimes renaming widgets wouldn't work and the Batch Renamer would check out hundreds of files, even if names didn't actually change. So I fixed some of them and wrote about the process:

https://larstofus.com/2026/04/26/how-unreal-struggles-with-with-renaming-stuff-and-how-to-fix-it/ (code for the fixes included)

u/LarstOfUs — 4 months ago