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Issues with VST Plugins in FL Studio

This article lists VST plugins with known problems in FL Studio, and the solution(s) (if possible).

The list is not complete, but we add toublesome plugins as we find them. If you have a plugin that you fixed a problem for, that isn't currently listed here, please report it in the Technical Support Forum and inform us about the issue so that we can add it to the KB article.

If you are having trouble with a plugin and the solution is not listed below, there is a section in the refernce manual titled 'Plugins behaving badly' containing troubleshooting solutions.

First, always start by downloading the latest version of the plugin from the developer and the latest version of FL Studio available to you.

Plugins with known problems in FL Studio are...

Audio Damage Axon

Problem: The plugins mixer doesn't have any effect on the sound.
Cause: Each plugin voice is also sent to a separate output, so the full sound is heard regardless of the mixers settings.
Solution:  Select 'Wrapper Settings > Processing' and disable 'Process inactive inputs and outputs' as well as the additional plugin outputs.

Bandstand

Select 'Wrapper Settings > Processing' and enable 'Notify about rendering mode'.

Bias FX
Problem: Rendering out of sync.
Solution: Select 'Wrapper Settings > Processing' and enable 'Notify about rendering mode', disable 'Use fixed size buffers > Process Maximum Size Buffers'.

Chorus CH-2

Problem: no sound and the audio monitor shows a single line at the extreme left or right
Solution: switch on "Use fixed size buffers" option in the wrapper (you'll have to reset/reload the plugin for it to take effect)

East West

Problem: Strange noises and glitches while during playback.
Solution: Select 'Wrapper Settings > Processing' and enable the 'Use fixed size buffers' option .

 

Emulator X3
Problem: Crashes or produces no output.

Solution 1:
Disable 'Ultra-High Precision Interpolation' within Emulator X3.

Solution 2:
Copy the following files into both the Windows\System32 and Windows\SysWOW64 folders:
- EmulatorXVSTi_lib.dll, found in 'Program Files (x86)\Creative Professional\Emulator X'
- EmulatorXVSTi_lib64.dll, found in 'Program Files\Creative Professional\Emulator X'

 

Fabfilter

Problem: When using multiple instances of fabfilter plugins you may experience CPU overload and  lockups caused by graphics acceleration.
Solution: Refer to 'How to disable graphics acceleration'.  According to FabFilter their use of OpenGL hardware acceleration doesn't work well with some graphics card drivers.

 

Hypersonic 2

Problem: The DXi version of the plugin doesn't work very well in FL Studio.
Solution: Use the VST version (In FL Studio 11 and under select 'Channel > Add one > More...' scroll down to the VST section).

 

Kontakt

Problem: Audible artifacts that occur at higher tempo.

Solution: Enable 'Align tick lengths' in FL Studio Audio Settings.

Problem: Experiencing clicks, pops, and CPU spikes within Kontakt.
Solution: Select 'Wrapper Settings > Processing' and enable the 'Use fixed size buffers' option.

Problem: 'OrangeTreeSamples Passion Flute' library doesn't output audio after using FL Studio transport controls.
Solution: Disable 'Reset plugins on transport' in FL Studio Audio Settings.

Problem: Frequent crashes.
Solution: 
Within Kontakt select 'Browse > Files > View' and disable 'show network drives, show removable drives, show foreign formats'.


Melodyne Editor

Problem: Playback position isn't correct in some cases.
Solution: Select 'Wrapper Settings > Processing' and disable the 'Send loop position' option.
Note: This workaround is not necessary in FL Studio 9.0.3 or higher.

MOTU Symphonic Instrument

Problem: High cpu load.
Solution: Select 'Wrapper Settings > Processing' and enable the 'Use fixed size buffers' option.

Nexus w/ Expansions

Problem: Crashes
Solution: Select 'Wrapper Settings > Processing' and enable the 'Use fixed size buffers' option.

Nexus 2

Problem: Sound spikes after a while.
Solution: Either disable the 'Export with ultra quality' option in Nexus or select 'Wrapper Settings > Processing' and disable the 'Ensure processor state in plugin callback' option.

Omnisphere

Problem: Audible glitches on some presets.
Solution: Select 'Wrapper Settings > Processing' and enable the 'Use fixed size buffers' option.

Omnishpere 2
Problem: Crashing when changing presets.
Solution: Select 'Wrapper Settings > Processing' and enable the 'Use fixed size buffers' option.

Play 64 Bit

Problem: Projects crashing.
Solution: Disable the 'Reset plugins on transport' option in FL Studio Audio Settings.

 

Reason (through ReWire)

Problem: Reason fails to load with either of the following error messages:
1. "Reason engine unable to open. Please check your Rewire host"
2. "Could not connect to the Reason engine. The Reason engine is already in use"
Solution: Disable 'Auto close device' in FL Studio Audio Settings.

rcg:audio sfz

Problem: Memory error, 'Out Of Memory'
Solution: From the sfz options set the mode from SF32 to PR32. sfz has a memory bug that sometimes appears in SF32 mode.

Reflektor (Native Instruments)

Problem: Audible Buzzes/Crackles/Noises
Solution: Enable 'Align tick lengths' option in FL Studio Audio Settings.

Serum
Problem: Serum crashes FL Studio when added or used within a project, caused by a suspected VST GUI/Direct2D conflict.
Solution: Uninstall AMD Raptr software, 

Slate Digital plugins

Problem: No output.
Solution: Select 'Wrapper Settings > Processing' and enable the 'Process inactive inputs and outputs' option.
Video: Youtube

 
Spire
Problem: Spire not working properly in FL Studio, freezing and crashing.
Solution: Use the recommended settings provided by Reveal Sound in 'Note For FL Studio Users!'.

SynthEdit made plugins

Problem: Audio glitches and stuttering, possible crashes.
Solution: Select 'Wrapper Settings > Processing' and disable the 'Allow threaded processing' option.

Virtual Sound Stage 2

Problem: Crashes during rendering.
Solution: Select 'Wrapper Settings > Processing' and enable 'Use fixed size buffers' and 'Notify about rendering mode' options.

Waves Plugins

Problem: Issues installing Waves plugins.
Solution: How to install and use WAVES plugins?

Problem: Waves plugins not working (General).
Solution: Issues with Waves Plugins after installing Waves Central


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