High CPU usage with the Piapro Studio VST at Idle

[SeleDreams]

Bug Summary

When the Piapro Studio VST is loaded on LMMS, I can see a high CPU usage that doesn't occur with any other plugins.

Steps to reproduce

Install Piapro Studio and a VOCALOID voicebank (The hatsune miku v4 english demo can be used, downloadable here https://sonicwire.com/product/A4080 it contains both the voice and the Piapro Studio VST)

Load the Piapro Studio VST using VeSTige.
The processor usage is high at idle.

Expected behavior

It should stay at a low processor usage.

Actual behavior

The processor usage gets high.

Screenshot

LMMS version used

1.2.1 on KDE neon 5.17

Logs

Click to expand

seledreams@seledreams-Predator-PH315-51:~/Applications$ ./lmms-1.2.1-linux-x86_64_1dd8df79ef70f3b0822d8185475899fe.appimage 
Carla appears to be installed on this system at /usr/lib[64]/carla so we'll use it.
Jack appears to be installed on this system, so we'll use it.
Notice: could not set realtime priority.
0012:fixme:wer:WerSetFlags (2) stub!
0012:fixme:heap:RtlSetHeapInformation (nil) 1 (nil) 0 stub
001b:err:module:import_dll Library mscoree.dll (which is needed by L"C:\\windows\\Microsoft.NET\\Framework64\\v4.0.30319\\mscorsvw.exe") not found
001b:err:module:attach_dlls Importing dlls for L"C:\\windows\\Microsoft.NET\\Framework64\\v4.0.30319\\mscorsvw.exe" failed, status c0000135
000f:err:service:process_send_command service protocol error - failed to write pipe!
000f:fixme:service:scmdatabase_autostart_services Auto-start service L"clr_optimization_v4.0.30319_64" failed to start: 1053
Starting using X11Embed protocol.
0009:fixme:nls:GetThreadPreferredUILanguages 00000038, 0x32ecf8, 0x32ed08 0x32ecfc
0009:fixme:nls:get_dummy_preferred_ui_language (0x38 0x32ecf8 0x32ed08 0x32ecfc) returning a dummy value (current locale)
unique ID: 
0032:fixme:ver:GetCurrentPackageId (0x10dfecc (nil)): stub
0009:fixme:ntdll:EtwRegisterTraceGuidsW (0xa85e89, (nil), {f7b697a3-4db5-4d3b-be71-c4d284e6592f}, 7, 0xd3f1c0, (null), (null), 0xda8388): stub
0009:fixme:ntdll:EtwRegisterTraceGuidsW   register trace class {72b14a7d-704c-423e-92f8-7e6d64bcb92a}
0009:fixme:ntdll:EtwRegisterTraceGuidsW   register trace class {e2091f8a-1e0a-4731-84a2-0dd57c8a5261}
0009:fixme:ntdll:EtwRegisterTraceGuidsW   register trace class {e8a3bf1f-a86b-4390-9c60-5390b969d22c}
0009:fixme:ntdll:EtwRegisterTraceGuidsW   register trace class {5727a00f-50be-4519-8256-f7699871fecb}
0009:fixme:ntdll:EtwRegisterTraceGuidsW   register trace class {7e854ec7-cdc4-405a-b5b2-aaf7c9e7d40c}
0009:fixme:ntdll:EtwRegisterTraceGuidsW   register trace class {79a60dc6-5fc8-4952-a41c-1163aeec5eb8}
0009:fixme:ntdll:EtwRegisterTraceGuidsW   register trace class {2718d25b-5bf5-4479-8e88-babc64bdbfca}
0009:fixme:process:GetNumaHighestNodeNumber (0x32fa24): semi-stub
RemotePlugin::DebugMessage: inputs: 0  output: 32
RemotePlugin::DebugMessage: creating editor
0009:fixme:ver:GetCurrentPackageId (0x32ef70 (nil)): stub
0041:fixme:nls:GetThreadPreferredUILanguages 00000038, 0x33f640, 0x33f650 0x33f644
0041:fixme:nls:get_dummy_preferred_ui_language (0x38 0x33f640 0x33f650 0x33f644) returning a dummy value (current locale)
0041:fixme:ver:GetCurrentPackageId (0x33f7c4 (nil)): stub
0041:fixme:shell:InitNetworkAddressControl stub
0009:fixme:shell:InitNetworkAddressControl stub
RemotePlugin::DebugMessage: editor successfully created

[ghost]

I'm no developer or a proper producer , but what seems to be the issue is that LMMS does not support realtime rendering of audio and instrument files.
We will have to wait for the next update , it seems.
Till then , use audacity , and use a reference track.

[Spekular]

LMMS does not support realtime rendering of audio and instrument files.

Yes it does.

[DomClark]

Have you tried it in any other DAWs? Is the CPU usage high there too, or just in LMMS?

[no-response]

This issue has been automatically closed because there has been no response to our request for more information from the original author. With only the information that is currently in the issue, we don't have enough information to take action. Please reach out if you have or find the answers we need so that we can investigate further.