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.
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.
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!
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:
