Testing multiple scenes / closing them, leads to slowdown

GDevelop general
#1

I have a map where I can go to different levels and then return to it, and I was pretty careful to make sure that previous scenes were closed.

But when I open a level for the third time (i.e., I open a scene, return to the map, open a scene, return to the map, then open a scene again), the performance is severely stunted, unplayable. It’s not a specific level causing this issue, but just the third time a scene is opened.

Am I missing a “stop any paused scenes?” Cause I’ve been quite careful about clearing the memory between scene switches. I’ve double checked it a ton, and it is stopping all paused scenes.

Thanks!

#2

Do you change scenes or pause scenes?
Can you try to reproduce the issue in a new project, and share it with us if you succeed?

#3

Okay, I’ll keep exploring what the deal is. I’ll let you know if I discover what the problem is.

#4

I think it may have to do with a ton of storage being read? I made sure to close all of the storage but this doesn’t seem to help. Maybe I’m missing something?

I also ran a debug a few times, and it looks like the time per events is multiplied each time a scene is opened. I have no idea why. It looks like it’s reading linked events per level multiple times.

#5

What do you call linked events?
I remember a problem with external layouts loading the objects twice, but it doesn’t sound quite like your issue.
Can you share a liluo build, so I can take a look at the issue?

#6

Oh, “Include Events from ‘LevelStart’”.

I use a ton of these, 15-20 of them per level (it’s a big project).

For example. I thought maybe about using a trigger once but that obviously wouldn’t work. I have no idea what’s causing it. I did a retest and it’s just finishing a level and going to a consecutive one, from the map, that causes a slowdown of 100% (adding ~100% more load per every additional level opened). It’s almost as if it’s not actually closing the previous scene at all, but I made super sure that it was.

It’s very weird. I’d share it but I’m super secretive about the project I’m sorry haha. O_o

#7

Most of us don’t care about about your project per se, but just want to help you to get it working. You can share a project in a PM rather than on this public post. Check with whoever you PM if you do, but I suspect any of the devs will be fine with it.

#8

If you think you found a sure way to reproduce the issue, try to reproduce it in a dummy project, and share that if you’re successful.

#9

I will keep you guys updated, I’m pretty much stuck until I figure this out so gonna focus on this in the timebeing.

There’s somewhat of a related thread here

My guess is it’s probably a memory leak.

#10

Another thing of note here is that when I restart a level directly from inside the game, there are no issues. Going back to the map, and going to the same level, has no problems no matter how many times I do it.

Only when I go to a new or distinct level, I’m getting massive slowdown. Still working on what’s causing it.

#11

From the editor, or within the game?

#12

Within the game. I’m now gonna just delete my external links one by one and see which one may be causing this issue. It’s really weird.

#14

It’s a fairly common condition. :thinking:
Could you make a dummy project demonstrating the issue?

#15

Edit: not even sure if that’s the problem.