FPS drops significantly from 60 to 15 and continues to drop as time progresses.

[Nader-B10]

Is there an existing issue for this?

• [X] I have searched the existing issues

Describe the bug

The problem is that the number of frames drops significantly from 60 at the beginning of the scene to 15 and continues to drop as time progresses.

It is very likely that the problem may be due to the slider or the mask behavior .

gdevelop-game.zip

Steps to reproduce

Open the attached project file and preview it and move the slider repeatedly up or down. You will notice within a few seconds that the number of frames begins to decrease and continues to decrease significantly.

GDevelop platform

Web

GDevelop version

5.4.205

Platform info

*OS (e.g. Windows, Linux, macOS, Android, iOS)* > *OS Version (e.g. Windows 10, macOS 10.15)* > *Browser(For Web) (e.g. Chrome, Firefox, Safari)* > *Device(For Mobile) (e.g. iPhone 12, Samsung Galaxy S21)* >

Additional context

No response

[Nader-B10]

After reviewing another game project (multiplayer) I was working on(windows version), I discovered that it was having the same problem, a significant drop in FPS over time to less than 20 FPS, even though it didn't have a slider or mask behavior :

https://drive.google.com/file/d/16KUc4cjYTu8ezPNPfKKrzi-o09826dWG/view

[Nader-B10]

Ready to answer any questions or inquiries regarding the problem and provide more information if you need it.

[AlexandreSi]

Hi @Nader-B10, thanks for taking the time to report this issue. I'm unable to reproduce the issue with the project you attached on my macOS. To investigate the issue, you could open the developer tools, head to the Performance tab.

From there, you can record the game when the FPS has dropped and check from this screen if there is a step that looks longer then the others.

If you're not comfortable with reading this kind of graphs, you can save it and send it over.