How to make a game lag less

[wpnfcj (KerW)]

What do you want to achieve? So i made a gun system that appears to experience a lag spike every time someone gets killed or shoots alot. How can i “optimise” the scripts or have a way at reducing lag and making it smoother and faster?

What is the issue? Lag spikes and drop in performance when using guns.

What solutions have you tried so far? I have tried adding waits so it has a cooldown to make an attempt at reducing lag. I have Streaming Enabled turned on but im not sure if that changes anything.

EIDT: I’ve looked at the Performance stats in game and the game is using about 956 MB of memory, The ping is quite low at a base of 50. Does anyone know how i can reduce the memory used?

[Mystxry12 (Mystxry)]

You can’t just expect others to solve some issue, without providing anything to analyze, which in this case is the code.

[wpnfcj (KerW)]

So your implying i send you my entire gun system? I cant send snippets bc i don’t know what parts are causing the lag in the first place

[Kyl3ST]

tbh is pretty impossible for a “big” game to use less than 700MB of memory independent of what you try, even when you make a game without anything it will use allot already over the “flag” that roblox has set which is 200MB

[wpnfcj (KerW)]

But my game is quite empty with only a few parts in workspace and a gun system so i dont know how its using over 900mb already.

[Kyl3ST]

then i would recommend to use coroutine.wrap, task.spawn or spawn(pretty old)

[Mystxry12 (Mystxry)]

@wpnfcj

So your implying i send you my entire gun system

If you feel uncomfortable sharing it, you don’t need to. But additional info needs to be provided, such as when the lag occurs, whether it happens in general or when you do a specific thing like reloading. Other causes can be poor or unoptimized code.

[Kyl3ST]

but if you don’t give more informations about your script we can’t really help you

[wpnfcj (KerW)]

I have stated that the lag occurs when using the gun in general or when u get a kill. I believe its because the code is not optimised as i have never learned how to optimise my code before. If you have any advice / help for me on how to optimise my code, could you let me know?

[wpnfcj (KerW)]

How would i use these? Ive never used them before.

[Mystxry12 (Mystxry)]

@wpnfcj

If you have any advice / help for me on how to optimise my code, could you let me know?

If I don’t even know how the code look like, what advice can I give ?

[wpnfcj (KerW)]

What piece of the code do you need?

[wpnfcj (KerW)]

You could maybe give general info for optimising any scripts such as how to normally optimise scripts.

[Mystxry12 (Mystxry)]

Well it would be better if you could pinpoint the code which is causing the lag by commenting certain parts of your code and seeing if the lag goes down, and if a culprit has been found, just post the code here

[wpnfcj (KerW)]

The gun is ran by 1 local script and 1 server script using FastCast in ServerStorage. My question is how by commenting does it make lag go down? I feel as though that would not fix anything.

[wpnfcj (KerW)]

Situation update:

I replaced all the Wait()s with “task.wait()” and deleted a dummy that lags when u kill it from the game and ive brought down the memory a bit and its freed up like 100+ MB

I have noticed that some people use a semi colon after a line for example

end;

-- or even,

end);

i was wondering if that means anything and if it affects the script in anyway?

[RatiusRat (Boopmaster)]

You may want to check microprofiler for the reason of the huge latency between frames, it can help you identify whether it may be a physics issue ,or identify the group of scripts causing the issue.

[Mystxry12 (Mystxry)]

@wpnfcj

1 local script and 1 server script

Doesn’t seem like much code to cause performance issues.

@wpnfcj

I replaced all the Wait()s with “task.wait()”

While, ofc task.wait() is superior to wait(), I don’t think it will cause such a noticeable performance drop.

@wpnfcj

I have noticed that some people use a semi colon after a line for example

That’s optional in luau, and it has no impact on performance.

[wpnfcj (KerW)]

It might be the fast cast module the gun script relies on to work.

[Mystxry12 (Mystxry)]

FastCast is a well tested module, so I don’t think the issue comes from there. You could open up micro profiler as such:

Finding the specific cause of lag using microprofiler

Use debug.profilebegin() and debug.profileend() to figure out which parts of your scripts take the longest to process. For example this: function test1() for i = 1, 10000 do math.sin(i) end end function test2() for i = 1, 5000 do math.sin(i) end end while wait() do debug.profilebegin("TEST1") test1() debug.profileend("TEST1") debug.profilebegin("TEST2") test2() debug.profileend("TEST2") end …will cause the profiler to look like this: [image]

What is "debug.profilebegin" and "debug.profileend"?

They show how long it took to perform a certain task in the microprofiler. This is used for locating performance issues and fixing them. Run debug.profilebegin() at the start of some code with an argument of what you want the name to appear in the microprofiler as. Then run debug.profileend() at the end of your code with that same name argument. You’ll be able to determine how long and how performance heavy that code was.