ArduinoFFT optimized

* use softhack007 variant of ArduinoFFT (10% faster)
* small update to 16MB_V4 buildenv

platformio.ini

@@ -926,7 +926,9 @@ build_flags_S =
   ; -D WLED_ENABLE_DMX
 
 lib_deps_S =
-  https://github.com/kosme/arduinoFFT#develop @ 1.9.2+sha.419d7b0 ;; used for USERMOD_AUDIOREACTIVE - using "known working" hash
+  ;; https://github.com/kosme/arduinoFFT#develop @ 1.9.2+sha.419d7b0 ;; used for USERMOD_AUDIOREACTIVE - using "known working" hash
+  https://github.com/softhack007/arduinoFFT.git#develop @ 1.9.2      ;; used for USERMOD_AUDIOREACTIVE - optimized version, 10% faster on -S2/-C3
+
 
 animartrix_build_flags = -D USERMOD_ANIMARTRIX ;; WLEDMM usermod: CC BY-NC 3.0 licensed effects by Stefan Petrick
 animartrix_lib_deps = https://github.com/netmindz/animartrix.git#f070fefc42febe2de3a2ab5d6d39e78bbc539702
@@ -1510,6 +1512,13 @@ build_flags = ${esp32_4MB_V4_M_base.build_flags}
   -D WLED_RELEASE_NAME=esp32_16MB_V4_M
   -D WLED_WATCHDOG_TIMEOUT=0 #-D WLED_DISABLE_BROWNOUT_DET
   -D ARDUINO_USB_CDC_ON_BOOT=0 ; needed for arduino-esp32 >=2.0.4; avoids errors on startup
+  ;; -D WLED_ENABLE_DMX ;; disabled because it does not work with ESP-IDF 4.4.x (buggy driver in SparkFunDMX)
+  -D WLED_ENABLE_DMX_INPUT ;; needs more testing
+  -D LEDPIN=16 -D RLYPIN=19
+  -D AUDIOPIN=-1 -D TEMPERATURE_PIN=23 -D PIR_SENSOR_PIN=-1 -D PWM_PIN=-1
+  -D ENCODER_DT_PIN=35 -D ENCODER_CLK_PIN=39 -D ENCODER_SW_PIN=5  ; WLEDMM spec by @SERG74: use 35 and 39 instead of 18 and 19 (conflicts)
+  -D FLD_PIN_SCL=-1 -D FLD_PIN_SDA=-1 ; use global!
+  -D HW_PIN_SCL=22 -D HW_PIN_SDA=21
 board = esp32_16MB 
 board_build.partitions = tools/WLED_ESP32_16MB.csv         ;; WLED standard for 16MB flash:   2MB firmware, 12 MB filesystem
 ;board_build.partitions = tools/WLED_ESP32_16MB_9MB_FS.csv ;; WLED extended for 16MB flash: 3.2MB firmware,  9 MB filesystem