Optimization tips for my large platform game?

Sorry if I don't explain this correctly, but let me try to explain my problem:

My game is getting pretty large as I am closer to finishing it, and I have been starting to run in to a few simple problems.

The main game frame is 5000x5000 in size and there are about 3000 objects. There's this one event that, according to the profiler, sometimes uses about 2000ms time.

It is just an event that checks if the player is colliding with a certain object, Dirt to be more precise, and the time is probably that high due to the majority of the frame being covered with Dirt.

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This has been concerning me and sometimes there are delays with sounds maybe because of this, Any tips to try and optimize this?

Quote from defisym

If you just want to create dust effect when player move on dirts, you can compare player's position area instead of collision, (test in zone doesn't support expression in current version so I don't recommend) maybe not that precise but much faster.
Another solution is to check collision every two or three frame.
Also, the profiler shows the total time consume of one event, so if you didn't feel the lag or notice frame drop it's not necessary to optimze it. After all, premature optimization is the root of all evil.

Thanks for the details. From what I understand on what you said, the player is supposed to collide with the dirt. There are caves in my game and they include a lot of dirt, and not colliding with them will result with the player easily leaving the cave. I didn't really understand what you meant about comparing the players position, I couldn't precisely find that expression.

Also Optimize Sample is already unchecked, my game has dialogue and when they play, the text animation sound has some delays sometimes.

Quote from Volnaiskra

I notice you've got it testing for overlaps twice in this event? I'm not very familiar with the Platform Movement Object, but is that necessary?

It is necessary. I would collide through every object without the bottom expression.

Quote from fredetmumu

how many active "dirt" is there in your level?

I don't know how to check the amount of one object, How would I do that?

Quote from fredetmumu

when i have a lot of actives in a level, and these actives do'nt move (like ladders), i prefere make a big picture whith all the actives a the good place. i made a little mfa to capture all the frame (just keep the actives wanted) and save it in a big png

This actually gives me an idea, I think I actually will include most of the tiles in one picture, and also make them backdrops instead of actives?

I also forgot to mention the game is unplayable in standard mode, maybe that will help the performance?

Edit: do motif backdrops help performance instead of one big picture?

Quote from Dobermann

Yes it helps a lot, big image needs more pressing to display, motif will repeat a small image.
Same with scale, you can use a small image and scale it to x2 to help to save memory.

Late reply, but I already tried the motif backdrops, and it solved my problem! Went from 3000 objects to only around 300. I had to remake the entire level but it was worth it, and even though this doesn't matter, the game runs good in standard mode now.

Thanks guys!