diff --git a/dpf b/dpf
index 49d447b..a0963ec 160000
--- a/dpf
+++ b/dpf
@@ -1 +1 @@
-Subproject commit 49d447b4369e0ed97b6a86cddf1843fc9130105c
+Subproject commit a0963ec1555484e2b34ac07bf3815e56136a41fa
diff --git a/plugins/Common/IldaeilPlugin.cpp b/plugins/Common/IldaeilPlugin.cpp
index 52a2c1c..af69f6c 100644
--- a/plugins/Common/IldaeilPlugin.cpp
+++ b/plugins/Common/IldaeilPlugin.cpp
@@ -81,12 +81,14 @@ const char* IldaeilBasePlugin::getPathForJSFX()
 
 class IldaeilPlugin : public IldaeilBasePlugin
 {
-#if DISTRHO_PLUGIN_WANT_MIDI_INPUT
-    static constexpr const uint kMaxMidiEventCount = 512;
-    NativeMidiEvent* fMidiEvents;
+   #if DISTRHO_PLUGIN_NUM_INPUTS == 0 || DISTRHO_PLUGIN_NUM_OUTPUTS == 0
     float* fDummyBuffer;
     float* fDummyBuffers[2];
-#endif
+   #endif
+   #if DISTRHO_PLUGIN_WANT_MIDI_INPUT
+    static constexpr const uint kMaxMidiEventCount = 512;
+    NativeMidiEvent* fMidiEvents;
+   #endif
 
     mutable NativeTimeInfo fCarlaTimeInfo;
     mutable water::MemoryOutputStream fLastProjectState;
@@ -95,10 +97,12 @@ class IldaeilPlugin : public IldaeilBasePlugin
 public:
     IldaeilPlugin()
         : IldaeilBasePlugin(),
-#if DISTRHO_PLUGIN_WANT_MIDI_INPUT
-          fMidiEvents(nullptr),
+         #if DISTRHO_PLUGIN_NUM_INPUTS == 0 || DISTRHO_PLUGIN_NUM_OUTPUTS == 0
           fDummyBuffer(nullptr),
-#endif
+         #endif
+         #if DISTRHO_PLUGIN_WANT_MIDI_INPUT
+          fMidiEvents(nullptr),
+         #endif
           fLastLatencyValue(0)
     {
         fCarlaPluginDescriptor = carla_get_native_rack_plugin();
@@ -165,11 +169,14 @@ public:
         fCarlaPluginDescriptor->dispatcher(fCarlaPluginHandle, NATIVE_PLUGIN_OPCODE_HOST_USES_EMBED,
                                            0, 0, nullptr, 0.0f);
 
-#if DISTRHO_PLUGIN_WANT_MIDI_INPUT
+       #if DISTRHO_PLUGIN_WANT_MIDI_INPUT
         fMidiEvents = new NativeMidiEvent[kMaxMidiEventCount];
+       #endif
+
+       #if DISTRHO_PLUGIN_NUM_INPUTS == 0 || DISTRHO_PLUGIN_NUM_OUTPUTS == 0
         // create dummy buffers
         bufferSizeChanged(getBufferSize());
-#endif
+       #endif
     }
 
     ~IldaeilPlugin() override
@@ -177,10 +184,12 @@ public:
         if (fCarlaHostHandle != nullptr)
         {
             carla_host_handle_free(fCarlaHostHandle);
-#if DISTRHO_PLUGIN_WANT_MIDI_INPUT
-            delete[] fMidiEvents;
+           #if DISTRHO_PLUGIN_NUM_INPUTS == 0 || DISTRHO_PLUGIN_NUM_OUTPUTS == 0
             delete[] fDummyBuffer;
-#endif
+           #endif
+           #if DISTRHO_PLUGIN_WANT_MIDI_INPUT
+            delete[] fMidiEvents;
+           #endif
         }
 
         if (fCarlaPluginHandle != nullptr)
@@ -438,7 +447,7 @@ protected:
            #if DISTRHO_PLUGIN_NUM_INPUTS == 0
             inputs = fDummyBuffers;
            #endif
-           #if DISTRHO_PLUGIN_NUM_INPUTS == 0
+           #if DISTRHO_PLUGIN_NUM_OUTPUTS == 0
             outputs = fDummyBuffers;
            #endif
 
@@ -456,13 +465,14 @@ protected:
 
     void bufferSizeChanged(const uint32_t newBufferSize) override
     {
-#if DISTRHO_PLUGIN_WANT_MIDI_INPUT
+       #if DISTRHO_PLUGIN_NUM_INPUTS == 0 || DISTRHO_PLUGIN_NUM_OUTPUTS == 0
         delete[] fDummyBuffer;
         fDummyBuffer = new float[newBufferSize];
         fDummyBuffers[0] = fDummyBuffer;
         fDummyBuffers[1] = fDummyBuffer;
         std::memset(fDummyBuffer, 0, sizeof(float)*newBufferSize);
-#endif
+       #endif
+
         if (fCarlaPluginHandle != nullptr)
             fCarlaPluginDescriptor->dispatcher(fCarlaPluginHandle, NATIVE_PLUGIN_OPCODE_BUFFER_SIZE_CHANGED,
                                                0, newBufferSize, nullptr, 0.0f);
diff --git a/plugins/Common/IldaeilUI.cpp b/plugins/Common/IldaeilUI.cpp
index e51fd0a..af2bca6 100644
--- a/plugins/Common/IldaeilUI.cpp
+++ b/plugins/Common/IldaeilUI.cpp
@@ -1085,6 +1085,52 @@ protected:
                 ImGui::SameLine();
                 if (supportsMIDI() && !isMIDIEnabled() && ImGui::Button("Enable MIDI"))
                     requestMIDI();
+
+                if (supportsBufferSizeChanges())
+                {
+                    ImGui::SameLine();
+                    ImGui::Spacing();
+
+                    ImGui::SameLine();
+                    ImGui::Text("Buffer Size:");
+
+                    static constexpr uint bufferSizes_i[] = {
+                       #ifndef DISTRHO_OS_WASM
+                        128,
+                       #endif
+                        256, 512, 1024, 2048, 4096, 8192,
+                       #ifdef DISTRHO_OS_WASM
+                        16384,
+                       #endif
+                    };
+                    static constexpr const char* bufferSizes_s[] = {
+                       #ifndef DISTRHO_OS_WASM
+                        "128",
+                       #endif
+                        "256", "512", "1024", "2048", "4096", "8192",
+                       #ifdef DISTRHO_OS_WASM
+                        "16384",
+                       #endif
+                    };
+                    uint buffersize = getBufferSize();
+                    int current = -1;
+                    for (uint i=0; i<ARRAY_SIZE(bufferSizes_i); ++i)
+                    {
+                        if (bufferSizes_i[i] == buffersize)
+                        {
+                            current = i;
+                            break;
+                        }
+                    }
+
+                    ImGui::SameLine();
+                    if (ImGui::Combo("##buffersize", &current, bufferSizes_s, ARRAY_SIZE(bufferSizes_s)))
+                    {
+                        const uint next = bufferSizes_i[current];
+                        d_stdout("requesting new buffer size: %u -> %u", buffersize, next);
+                        requestBufferSizeChange(next);
+                    }
+                }
             }
            #endif
         }