Performance issues in Cubase 15.0.20

I’ve just made the update from C14 to C15 and have very bad performance problems that occur after a few minutes of usage.

Windows 11 Pro 25H2

AMD Ryzen 9 7900X3D

34 GB Ram

MSI GeForce RTX 4060 Ti, latest Studio driver

At first, all seems fine but after a short while, the GUI is very laggy. For example if you click on another track, it can take almost 10 seconds (!) that you see the other track is active. But it seems that it’s not only the GUI. If you jump to your marker with Num 1 and then press Space to start the replay, you can’t hear the first bars playing and you don’t see the marker running. After a few seconds, audio starts and you see it running but VERY laggy.

If you restart Cubase 15, it doesn’t help. You have to restart the whole PC, then it’s gone untill it happens again but I had no problems at all with C14 and no other software has any performance issues.

I’ve set Cubase to the default settings, updated the video driver, started Cubase without 3rd party plugins and at last I’ve uninstalled Cubase and reinstalled it. It didn’t help.

Any ideas?

Have a check if you have some corrupted system file:

command prompt as admin:
sfc /scannow

and if needed:
DISM /Online /Cleanup-Image /RestoreHealth

Hi,

I have the same issues. Starts off okay, within minutes usually when I start moving the mouse, Cubase starts to stutter until it freezes ans then I have to close down using Task Manager. Reboots with a Freezedump file sent to Steinberg. Can’t do anything with Cubase at all.

Thanks for the replies!

Scanning/repairing corrupted files didn’t help. I also don’t think it was a problem of my system. It’s a quite fresh installation and everything else works fine.

This weekend I wanted to make some more research and saw, there is the 15.0.21 update available. I installed it and now my problem is gone.

It fixes a problem with the MediaBay. I didn’t notice that the MediaBay crashed on my system, but I don’t know the impact of it. Maybe it was exactly that. That would explain why it didn’t help to restart Cubase because the MediaBay is used by many Steinberg programs and runs independently.

Or maybe something is fixed that wasn’t mentioned in the release notes.

Anyway, I didn’t notice any performance issues since the update. Fingers crossed! :slight_smile:

Nope. It was too early to celebrate.

Today I’ve opened my test-project that I’m using to learn about the new features of C15. It’s very small, no third party plugins.

All I did was to drag an audio file from the library (Rock Pop Toolbox) into my arranger window. Here’s a video of it. Listen carefully when I hit the mouse button or the space bar to start replay:

Hi

My system is doing the same thing. Did you solve it by any chance

Cheers

Si

Check this topic with my case and possible actions you can apply.

Thanks for this, I will try it this evening

Hi, I had two similar issues (although they are related to Cubase 14…)

(1) Do you have a MIDI remote control? Which one is it? I had issues with Cubase 14 and Novation Lunchpad 25. Disabling the MIDI remote control completely solved the problem. The syndrom was, for that reason or another, similar to what you described.

(2) I am now having a (new, recent) issue with cubase 14, where after awhile (especially when I play MIDI), it starts to pause for short periods upon UI manipulations (e.g., selecting a different track in the project window, using the horizontal scroll bar of MixConsole, or even doing switching to other applications. Right now, I’m still debugging this issue (it’s not happening immediately, and not always…) but at least dynamically changing the affinity to P-Cores only is doing good things. (Anyways if you try that - don’t overlook the “force mode” in process lasso (see my comment that @starnaf just added to this thread)

Yes, I actually wrote my solution down here, but didn’t sent it, it was still here as a draft.

Anyway, I realized, the Cubase version wasn’t the only thing that changed. A few weeks earlier, I’ve installed my Novation Launchkey 61 MK3 (!) but didn’t work with Cubase at all in the meantime, so I didn’t realize there is an issue.

When the problem occured again, I disconnected the Launchkey - and it was gone!

So it really looks like it’s caused by the Launchkey if other people experience the same issue.

By the way, I reconnected the Launchkey, because I needed it and thought, when it’s getting slow, I can just disconnect it again. But since then it didn’t happen. Don’t ask me why.

Mate, I owe you and @eweb a beer. Ive got a Launchkey and I just unplugged it and everything is working again. Ive spent 2 days peeing about and I was just creating a Windows 23H2 ISO to install just incase it was the latest version of Windows doing it.

Thank you so, so much.

Si

Hey you made my day! You don’t need to disconnect the lunchkey. You can disable the remote c9ntrollrr midi ontegration functionality from cubase and still use the basic midi functionality of the novation. It’s just that the “integration” wouldn’t work. If you need better instructions let me know. I reported it here in this forum a few months ago (it took me a lot of time to analyze that…). I provided steinberg with a dump file. Hopefully they’ll do something about it…

Best,

Erez

Hey mate

I disabled it like you said, and it’s all working like a dream again.

I absolutely love Cubase, but these little quirks every now and then can drive you crazy :joy:.

Thanks again :folded_hands:

Hi,

In fact, there is a chance that if you update the firmware of Novation (using “Novation Components” software) you may escape the problem as well. I updated Novation’s firmware and later on got to other performance issues, so I just disabled it completely as I really don’t need the “remote control integration” at all). If you do need it, try to update the firmware…

Erez

When I just tested Cubase 15 I ran into this problem pretty quickly.

Since I realized, it’s caused by the Launchkey, and since I unplugged it ONCE (!) it doesn’t happen anymore.

I worked some hours in Cubase 15 now and also used the Launchkey without deactivating the Midi Remote Control script (I actually would like to use it). I don’t know why it’s not happening anymore, but I don’t complain.

The problem that I had in the past (if you wish I can find the thread here in which I reported it) was coming and going. At first, updating the firmware of the launchkey didn’t help. Weeks later I re-updated the firmware and some chances the problem disappeared - but I didn’t bother to test it for too long - I just completely disabled the “remote control integration” aspects with Cubase as I did not use it… In fact, the only reason I bought Launchkey 25 was that I replaced my RD2000 MIDI controller with a real Rhodes Mk8 (electric piano) that happens to have a nice MIDI support as well (yes! in addition of being a true electric piano) - but it lacks a mod-wheel… So my entire reason for having the launchpad was to have a mod-wheel (-:

Anyways, good luck and I hope it won’t happen again.

Note that I provided a dump to steinberg (via @Martin.Jirsak ) and never heard back from Steinberg. Martin - as you can see from this thread, the problem is broader… Unfortunately it’s a somewhat frustrating kind of a problem as it’s very hard to troubleshoot… and it creates a “game over” situation in which one simply cannot use cubase… The dump that I created to your request no longer exists in my google-drive. However, if needed, I think it is stored in my computer somewhere, so in case of a need I can try to locate it and re-upload it to the google drive.