1.6.4 - lags a lot on Linux Debian based - wayland (xwayland)

installed Vital 1.6.4
on MX Linux 25 via DEB Installer
Bitwig 5.3.13 DEB installed too
NVIDIA RTX 4070
64 GB RAM

i installed just know, opened in bitwig and try it.

  Desktop:  KDE Plasma    v: 6.3.6
            Qt            v: N/A info: frameworks v: 6.13.0 wm: kwin_wayland vt: 1
            dm             : SDDM
            Distro         : MX-25.1_KDE_x64 Infinity January 18 2026
            base           : Debian GNU/Linux 13 (trixie)
Graphics:
  Device-1            : Intel Raptor Lake-S GT1 [UHD Graphics 770] active: none
  Device-2            : NVIDIA [GeForce RTX 4070 Ti SUPER]         vendor: Palit
  driver              : nvidia           v: 580.126.18
  non-free            : 550-570.xx+
  Display:  wayland

            server      : X.org v: 1.21.1.16 with: Xwayland  v: 24.1.6
            compositor  : kwin_wayland
            driver      : X: loaded: modesetting,nvidia unloaded: fbdev,nouveau,vesa alternate: nv dri: iris
            gpu         : nvidia,nvidia-nvswitch display-ID: 0
Audio Server-1:  PipeWire  v: 1.4.5  status : active
           1: pipewire-pulse     status : active
           2: wireplumber        status : active
           3: pipewire-alsa      type   : plugin
           4: pw-jack            type   : plugin
       tools: pactl,pw-cat,pw-cli,wpctl
KWin version: 6.3.6
Qt Version: 6.8.2
Qt compile version: 6.8.2
XCB compile version: 1.17.0
Vulkan Instance Version: 1.4.309
X.Org version: 24.1.6

  • LAG on every click
  • no click reaction, The click is only registered when I move the mouse after the click (when selecting preset in the browser, click on the virtual keyboard)
  • it not happens if i click multiple time on the arrows of the preset selector
  • lags on mouse wheel for move knobs

Happen on Fedora/gnome/wayland and Debian/gnome/wayland also.

I’m also seeing this issue in ubuntu studio 26.04

Curious if this is with the clap version or all versions? On Fedora 44 the vst3 version works fine but can’t get the clap version to load after I entered the product key in the vst3 version. I do not experience lag in the vst3 version

it is still 1.6.4
i downloaded the Linux ZIP (no installer) and DEB

System is now mx linux 25.2 or lets say up 2 date

I only have CLAP visible an no ERROR about the VST3 but its not shown.
all is installed in the right folders.

  • same issues, midi reaction via midi keyboard is flawless, but no midi assignment
  • clicking with mouse lag as before
  • vst3 not found

CLAP Log Snippet:

[2026-06-24 09:55:07.137 float-main-app error] Plugin misbehaving Vital: plugin called clap_host_params.request_flush() on the AudioThread which implies that the plugin is either being called in clap_plugin.process() or being called by clap_plugin_params.flush().

[2026-06-24 09:41:54.089 float-document-master info] FloatDocument.isEngineReadyChanged(false->true)
[2026-06-24 09:43:04.388 notifications info] Audiodaten analysieren…:
[2026-06-24 09:43:04.393 float-document-master info] FloatDocument.isEngineReadyChanged(true->false)
[2026-06-24 09:43:04.398 Vital Audio Vital 3 info] Started loading plug-in (0 queued)
[2026-06-24 09:43:04.398 float-document-master info] Loaded 0 of 1 plug-ins
[2026-06-24 09:43:04.520 Vital Audio Vital 3 info] Engine loaded plug-in
[2026-06-24 09:43:04.520 Vital Audio Vital 3 info] Finished loading plug-in (0 queued)
[2026-06-24 09:43:04.521 float-document-master info] Loading all plug-ins took 123 ms
[2026-06-24 09:43:04.521 float-document-master info] Loaded 1 of 1 plug-ins
[2026-06-24 09:43:04.527 float-document-master info] FloatDocument.isEngineReadyChanged(false->true)
[2026-06-24 09:43:06.459 float-document-master info] FloatDocument.isEngineReadyChanged(true->false)
[2026-06-24 09:43:06.486 float-document-master info] FloatDocument.isEngineReadyChanged(false->true)
[2026-06-24 09:43:07.312 Vital Audio Vital 3 error] Plug-in crashed
[2026-06-24 09:43:07.313 float-document-master info] FloatDocument.isEngineReadyChanged(true->false)
[2026-06-24 09:43:07.318 float-document-master info] FloatDocument.isEngineReadyChanged(false->true)
[2026-06-24 09:43:07.320 notifications error] Plug-in abgestürzt:
[2026-06-24 09:43:16.311 Vital Audio Vital 3 info] Started loading plug-in (0 queued)
[2026-06-24 09:43:16.311 float-document-master info] Loaded 0 of 1 plug-ins
[2026-06-24 09:43:16.312 float-document-master info] FloatDocument.isEngineReadyChanged(true->false)
[2026-06-24 09:43:16.328 notifications info] Lade Plug-ins…:
[2026-06-24 09:43:16.440 Vital Audio Vital 3 info] Engine loaded plug-in
[2026-06-24 09:43:16.440 Vital Audio Vital 3 info] Finished loading plug-in (0 queued)
[2026-06-24 09:43:16.440 float-document-master info] Loading all plug-ins took 130 ms
[2026-06-24 09:43:16.440 float-document-master info] Loaded 1 of 1 plug-ins
[2026-06-24 09:43:16.445 float-document-master info] FloatDocument.isEngineReadyChanged(false->true)
[2026-06-24 09:43:20.643 Vital Audio Vital 3 error] Plug-in crashed
[2026-06-24 09:43:20.643 float-document-master info] FloatDocument.isEngineReadyChanged(true->false)
[2026-06-24 09:43:20.646 float-document-master info] FloatDocument.isEngineReadyChanged(false->true)
[2026-06-24 09:43:20.647 notifications error] Plug-in abgestürzt:
[2026-06-24 09:43:22.041 float-document-master info] FloatDocument.isEngineReadyChanged(true->false)
[2026-06-24 09:43:22.049 float-document-master info] FloatDocument.isEngineReadyChanged(false->true)
[2026-06-24 09:43:26.737 float-gui-widgets info] addClient WirePlumber, WirePlumber
[2026-06-24 09:43:26.737 float-gui-widgets info] addClient pipewire, pipewire
[2026-06-24 09:43:26.739 float-gui-widgets info] addClient WirePlumber [export], WirePlumber [export]
[2026-06-24 09:43:26.739 float-gui-widgets info] addNode AD103 High Definition Audio Controller, WirePlumber [export]/alsa,0x10de,0x22bb
[2026-06-24 09:43:26.740 float-gui-widgets info] setSupportedSampleRates 48000.0, [44100.0, 48000.0, 88200.0, 96000.0, 176400.0, 192000.0]
[2026-06-24 09:43:26.740 float-gui-widgets info] setSupportedBlockSizes 1024, [32…2048]
[2026-06-24 09:43:26.740 float-gui-widgets info] beginPortGroup true
[2026-06-24 09:43:26.740 float-gui-widgets info] addAudioPort Digitales Stereo (HDMI) playback_FL, WirePlumber [export]/alsa,0x10de,0x22bb/alsa_output.pci-0000_01_00.1.hdmi-stereo/playback_FL
[2026-06-24 09:43:26.740 float-gui-widgets info] addAudioPort Digitales Stereo (HDMI) playback_FR, WirePlumber [export]/alsa,0x10de,0x22bb/alsa_output.pci-0000_01_00.1.hdmi-stereo/playback_FR
[2026-06-24 09:43:26.740 float-gui-widgets info] beginPortGroup false
[2026-06-24 09:43:26.740 float-gui-widgets info] addNode USB Audio, WirePlumber [export]/alsa,0x0db0,0xa74b,Generic_USB_Audio
[2026-06-24 09:43:26.740 float-gui-widgets info] setSupportedSampleRates 48000.0, [44100.0, 48000.0, 88200.0, 96000.0, 176400.0, 192000.0]

Do you have in settings to prefer clap plugins? That’s usually what prevents the vst version from showing up unless you don’t have the install directories mapped like /usr/lib/vst3.

This is a different error than what I got in Bitwig 5.2.13. Clearing metadata and cache worked for me. I removed all of the clap plugins and reinstalled before running and then reinstall the plugins.

rm -rf ~/.BitwigStudio/index
rm -f ~/.BitwigStudio/cache/vst-metadata*

i never used that path…all vst3 is in ~/.vst3 for safety reasons.
well if i use the ZIP there is no installer, so i dropped into ~/.vst3.

Yes, you are right - i see that the installer put the vst3 there usr/lib/vst3…dang…who is making this lol

So i can live without vst3 of vital for safety reasons.
Developers do not should put stuff in the root folder they only should use ~/.vst3

Have you tried pointing bitwig to the /usr/lib/vst3 directory? It’s not a security issue as you still need sudo to modify the directory. Did you clean your cache and get clap working? Bitwig-studio gets installed in /opt and so do many other programs so I don’t understand the issue, it’s pretty standard. Yes I agree I prefer ~/.vst3 ~/.clap but if you install any of The Usual Suspect emulators they go into /usr/local/lib/vst3/.

yes

  • i delete index and vst meta data files
  • yes my DAW pointed to /usr/lib as well
  1. i only see CLAP anyways, CLAP works like before
  2. CLAP still lag
  3. the VST3 works in Renoise without laggin!!! why is that?

Some Apps i have in OPT too but i did not like, AND its not standard, it depends.