Serato DJ Pro General Discussion

Forum
 Serato DJ Pro General Discussion
Major memory leak in 4.0.1, not useable for live performance.
Talk about Serato DJ Pro, expansion packs and supported hardware

Major memory leak in 4.0.1, not useable for live performance.

internetdarwin 12:21 AM - 5 January, 2026
I am somewhat shocked to see this 4.x update is totally unusable in my case.

My existing setup is a Windows 10 Pro 64bit PC with 64 GB of ram, this has been my primary Serato workstation of many years, I had no issues with 3.x When moving to 4.x, I have noticed that after about 10 minutes, Serato consumes ALL AVAILABLE RAM. Not just a lot, but literally 99% of it taking 30-40 GB of RAM for itself and eventually causing stuttering and of Serato stalling as the RAM maxes out and begins to page to disk.

I have tried to pinpoint any kind of behavior to cause this, but so far I haven't gotten very far. I have completely removed 4.x and re-installed, same issue. I have downgraded to 3.x and the issue does not exist on that version (so at least I can fall back there for now.)

On 4.0.1, if I just open Serato to a blank session (my Serato library is on an external drive and not plugged in) and let it sit there, it will not accumulate a lot. Plugging in the external drive and having Serato load my old crates starts consuming memory at an alarming upward trend. Then, loading and unloading tracks seems to significantly accelerate the rate of memory being used.

My question is: Has anyone experienced this or similar behavior, and is there anything I can do to help alleviate the issue so I can use my main rig with Serato 4.x for live performances?
DjSyndic8 3:05 AM - 5 January, 2026
there is a lil app called wise memory optimiser a lil tool that can free up ram when it has been used, try this app and see if the issue is resolved, the other is dual booting win10 Lite, this is a version of windows that has been debloated, Win10 Lite runs a lighter version of windows.
internetdarwin 6:33 PM - 5 January, 2026
Thanks for the feedback. I will look into it to see if it helps. My issue however is that no matter how much RAM I free up (I have a lot free normally), Serato will take up all of it and then start to stutter and crash. Is it normal for Serato to use 30+ GB of RAM?
Sony311 6:54 PM - 5 January, 2026
Sounds like you might have another app running thats killing your memory. Suggest you open task manager and keep an eye out on any resource hogs while you DJ.

Quote:
Thanks for the feedback. I will look into it to see if it helps. My issue however is that no matter how much RAM I free up (I have a lot free normally), Serato will take up all of it and then start to stutter and crash. Is it normal for Serato to use 30+ GB of RAM?
internetdarwin 6:56 PM - 5 January, 2026
Quote:
Sounds like you might have another app running thats killing your memory. Suggest you open task manager and keep an eye out on any resource hogs while you DJ.

Quote:
Thanks for the feedback. I will look into it to see if it helps. My issue however is that no matter how much RAM I free up (I have a lot free normally), Serato will take up all of it and then start to stutter and crash. Is it normal for Serato to use 30+ GB of RAM?


The "other app" is Serato DJ Pro itself. When I open task manager, Serato DJ Pro is consuming 99% of memory, sometimes in excess of 30-40 GB after 10 minutes.
internetdarwin 7:48 PM - 5 January, 2026
Here is an example of what I'm talking about, this is after about 10 minutes of "light" mixing: imgur.com

And I've recorded a video explaining the issue as well: youtu.be

Thank you.
internetdarwin 8:09 PM - 5 January, 2026
And here it is after sitting about 20 minutes, totally consuming all memory and the UI is not usable anymore: imgur.com
DJ Sound Technique 12:17 AM - 6 January, 2026
I also noticed that 4.0.1 seems to run really well when I first start playing. I did a 2 hour mix yesterday and by the end of the mix, the waveforms were stuttering and jumping all over the place. restart serato and it is fine to start again. Does seem like a memory leak issue. I was using serato video and recording, and it was using around 60gb of my 96gb of ram. WAY more than 3.xx ever did. Running Windows 11
Serato, Support
Tom R 2:23 AM - 6 January, 2026
Hi there everyone,

So sorry to hear about this issue.

We have created a bug for this, but we need some more information.
If you are experiencing this, could you please reply with the following 3 pieces of information?

A session log from when you first opened Serato DJ Pro 4.0.1 and plugged in your external drive. You can find instructions on how to get this by following this article: support.serato.com

Your '_Serato_' folder on your external drive. Please send this as a .zip archive.
On macOS, this can be done by right-clicking on the folder and selecting 'Compress "_Serato_"'.
On Windows, this can be done by right-clicking on the folder and selecting 'Send to' then 'Compressed (Zipped) Folder')

Your system report file. You can find instructions on how to get this by following this article: support.serato.com

If any of these files are too large to attach to this email you can upload it to a file-sharing service such as Dropbox and send it through a direct download link in your response.

If you're having issues finding this link please refer to the Dropbox Help Centre article; How do I link a file or folder?

Note: The permissions for this link need to be set to public, otherwise we will be unable to view it.

Thanks!