BR: Waveform 8 MIDI editing is very slow on Windows

[fromwithin]

Waveform 8.2.7 64-bit Windows 10

As there is a discussion talking about Waveform's GUI being slow on MacOS, I thought I'd weigh in with that fact that MIDI editing on Waveform on Windows is very, very slow. Doing any sort of editing slams the CPU and has terrible latency. I've been hoping that it was just a bug that would be fixed in an update, but it doesn't look like it's going to be now that Waveform 9 is in public beta. Editing in Waveform 9 is fine, as it is in every other Tracktion version.

[chico.co.uk]

Can you replicate this in a new project and edit, with simple midi clips in it? Is it slow for your straight away, or is it something that gradually happens, after you've worked on things for a bit?

The projects you're editing, they don't have loads of midi CC type info in them, do they? Maybe not even deliberately, maybe you recorded midi from an external controller with "automation write" turned on (the red button to the left of the play button). In the past there's been issues with midi when there's loads of controller info recorded in the midi clips. Just check the midi clips in the edit, turn on the "Controllers" button in midi editing, and check there's not loads of weird controller info in there

[fromwithin]

I've just created a new project, then loaded in projects of various sizes and the editing latency corresponds with the project size, so it must get slower and slower as the project size increases. There are no CCs. I rarely record anything. Almost everything I do is drawn in with the mouse. Every Waveform project I've got that is of reasonable size is very slow. The same project loaded into W9 beta is fine. A large project that was created in T7 is fine in T7 but very slow in W8.

Also, moving a MIDI input device to a different channel has the same latency as when moving a note.

[tonedef71]

I've just created a new project, then loaded in projects of various sizes and the editing latency corresponds with the project size, so it must get slower and slower as the project size increases. There are no CCs. I rarely record anything. Almost everything I do is drawn in with the mouse. Every Waveform project I've got that is of reasonable size is very slow.

Just curious... do your edits make heavy use of linked MIDI clips?

[fromwithin]

Well I use them wherever it seems appropriate. Everything is relative, so who knows what "heavy" actually means in this context?

[tonedef71]

Well I use them wherever it seems appropriate. Everything is relative, so who knows what "heavy" actually means in this context?

By heavy use, I mean generous usage of linked copies of MIDI clips.

I bring this up because there was an issue in which manual mouse editing of MIDI events in a linked MIDI clip could cause the the DAW to freeze while several linked MIDI clips were being updated simultaneously in real time to stay in-sync with one another. It was so bad that I had to forcibly close the DAW (via the Operating System) and restart the DAW.