Hi everyone !
I noticed huge lags when I packaged a default 3rd person UE5.1 project.
But, this drop of performance happens only on my desktop with:
And does not happen on my laptop with a lower config:
It’s a bit boring to use my laptop to try packaged projects 
If anyone knows how to solve this problem I’d be grateful !
Thanks
Does your better PC package the project faster?
Hey there @Pantoine! Depending on priority, CPU cores and threads, there could be a reason for the lag. Generally even on more powerful rigs, they tend to be crippled decently while packaging. Take a quick look at your system resources while each are happening and it might give you some insight into where the bottleneck is.
Hi @EliasWick and @SupportiveEntity, thanks for your replies.
I don’t package my project on my laptop; I don’t have UE5 installed on it. I just use it to try my packaged projects.
I will take a look at my resources when I can. But yesterday I noticed it only happens when the UE Editor is opened, is it a known problem ? When the editor is closed, it runs perfectly fine.
Thanks again,
Pantoine
Hey @Pantoine! Welcome to the forums!
Are you running the editor AND the packaged game at the same time? The lag would make sense as both would take a significant amount of memory, and running at the same time would use up a lot, if not all depending on the complexity of your assets, of your available processing power. The same as running multiple games at the same time (keep in mind that Unreal can and will use more memory than a packaged game. Since nothing is compressed).
Considering you only have 16 gigs of ram and its only happening when you have both open, it’s a memory issue, not a bug. So the good news is there is nothing inherently wrong with your PC or the programs!
I hope the above helps explain whats going on, and good luck on your Dev journey!
Hi @Quetzalcodename ! Thank you for your reply.
I would have thought of that yes, but I often have my UE Editor opened while I play games. Just yesterday, I played a heavy game while the UE Editor was running and I had not a single bit of FPS drop.
I would believe your statement if I had lags on other games too, but I don’t ! So I don’t understand why my empty UE project packaged is lagging so much and not much heavier games.
Hello @Pantoine were you able to get a fix for this?
I’m stuck with the same problem.
Hi @McMaleek,
Sorry for the late reply, I just updated to the latest Unreal Engine version and it solved the problem.
Hope you managed to solve it before my reply !
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