diff --git a/wled00/FX_fcn.cpp b/wled00/FX_fcn.cpp
index 949b6a932..7b4fb094b 100644
--- a/wled00/FX_fcn.cpp
+++ b/wled00/FX_fcn.cpp
@@ -1286,14 +1286,9 @@ void WS2812FX::finalizeInit() {
     _isOffRefreshRequired |= bus->isOffRefreshRequired() && !bus->isPWM(); // use refresh bit for phase shift with analog
     unsigned busEnd = bus->getStart() + bus->getLength();
     if (busEnd > _length) _length = busEnd;
-    #ifdef ESP8266
-    // why do we need to reinitialise GPIO3???
-    //if (!bus->isDigital() || bus->is2Pin()) continue;
-    //uint8_t pins[5];
-    //if (!bus->getPins(pins)) continue;
-    //BusDigital* bd = static_cast<BusDigital*>(bus);
-    //if (pins[0] == 3) bd->reinit();
-    #endif
+
+    // This must be done after all buses have been created, as some kinds (parallel I2S) interact
+    bus->begin();
   }
 
   Segment::maxWidth  = _length;
diff --git a/wled00/bus_manager.cpp b/wled00/bus_manager.cpp
index 5b948b9c4..8281211c1 100644
--- a/wled00/bus_manager.cpp
+++ b/wled00/bus_manager.cpp
@@ -410,7 +410,7 @@ std::vector<LEDType> BusDigital::getLEDTypes() {
   };
 }
 
-void BusDigital::reinit() {
+void BusDigital::begin() {
   if (!_valid) return;
   PolyBus::begin(_busPtr, _iType, _pins);
 }
@@ -910,7 +910,7 @@ void BusManager::on() {
       if (busses[i]->isDigital() && busses[i]->getPins(pins)) {
         if (pins[0] == LED_BUILTIN || pins[1] == LED_BUILTIN) {
           BusDigital *bus = static_cast<BusDigital*>(busses[i]);
-          bus->reinit();
+          bus->begin();
           break;
         }
       }
diff --git a/wled00/bus_manager.h b/wled00/bus_manager.h
index e96b9de71..ecebc120e 100644
--- a/wled00/bus_manager.h
+++ b/wled00/bus_manager.h
@@ -79,6 +79,7 @@ class Bus {
 
     virtual ~Bus() {} //throw the bus under the bus
 
+    virtual void     begin() {};
     virtual void     show() = 0;
     virtual bool     canShow() const                          { return true; }
     virtual void     setStatusPixel(uint32_t c)                {}
@@ -213,7 +214,7 @@ class BusDigital : public Bus {
     uint16_t getLEDCurrent() const override  { return _milliAmpsPerLed; }
     uint16_t getUsedCurrent() const override { return _milliAmpsTotal; }
     uint16_t getMaxCurrent() const override  { return _milliAmpsMax; }
-    void reinit();
+    void begin() override;
     void cleanup();
 
     static std::vector<LEDType> getLEDTypes();
diff --git a/wled00/bus_wrapper.h b/wled00/bus_wrapper.h
index 84c32f46b..7e6e74d85 100644
--- a/wled00/bus_wrapper.h
+++ b/wled00/bus_wrapper.h
@@ -597,7 +597,7 @@ class PolyBus {
       case I_HS_P98_3: busPtr = new B_HS_P98_3(len, pins[1], pins[0]); break;
       case I_SS_P98_3: busPtr = new B_SS_P98_3(len, pins[1], pins[0]); break;
     }
-    begin(busPtr, busType, pins, clock_kHz);
+
     return busPtr;
   }
 
diff --git a/wled00/pin_manager.cpp b/wled00/pin_manager.cpp
index 793b5440c..0d4c2ad5c 100644
--- a/wled00/pin_manager.cpp
+++ b/wled00/pin_manager.cpp
@@ -201,7 +201,12 @@ bool PinManager::isPinOk(byte gpio, bool output)
     if (gpio > 18 && gpio < 21) return false;     // 19 + 20 = USB-JTAG. Not recommended for other uses.
     #endif
     if (gpio > 21 && gpio < 33) return false;     // 22 to 32: not connected + SPI FLASH
-    if (gpio > 32 && gpio < 38) return !psramFound(); // 33 to 37: not available if using _octal_ SPI Flash or _octal_ PSRAM
+    #if CONFIG_ESPTOOLPY_FLASHMODE_OPI            // 33-37: never available if using _octal_ Flash (opi_opi)
+    if (gpio > 32 && gpio < 38) return false;
+    #endif
+    #if CONFIG_SPIRAM_MODE_OCT                    // 33-37: not available if using _octal_ PSRAM (qio_opi), but free to use on _quad_ PSRAM (qio_qspi)
+    if (gpio > 32 && gpio < 38) return !psramFound();
+    #endif
     // 38 to 48 are for general use. Be careful about straping pins GPIO45 and GPIO46 - these may be pull-up or pulled-down on your board.
   #elif defined(CONFIG_IDF_TARGET_ESP32S2)
     // strapping pins: 0, 45 & 46
diff --git a/wled00/wled.cpp b/wled00/wled.cpp
index 13d43218a..d6a39a399 100644
--- a/wled00/wled.cpp
+++ b/wled00/wled.cpp
@@ -380,6 +380,12 @@ void WLED::setup()
     case FM_QOUT: DEBUG_PRINT(F("(QOUT)"));break;
     case FM_DIO:  DEBUG_PRINT(F("(DIO)")); break;
     case FM_DOUT: DEBUG_PRINT(F("(DOUT)"));break;
+    #if defined(CONFIG_IDF_TARGET_ESP32S3) && CONFIG_ESPTOOLPY_FLASHMODE_OPI
+    case FM_FAST_READ: DEBUG_PRINT(F("(OPI)")); break;
+    #else
+    case FM_FAST_READ: DEBUG_PRINT(F("(fast_read)")); break;
+    #endif
+    case FM_SLOW_READ: DEBUG_PRINT(F("(slow_read)")); break;
     default: break;
   }
   #endif