diff --git a/platformio.ini b/platformio.ini
index 9471b484..c2e8f729 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -305,6 +305,8 @@ build_flags = -g
   -D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9472                ;; WLEDMM increase stack by 1.25Kb, as audioreactive needs bigger SETTINGS_STACK_BUF_SIZE
   #use LITTLEFS library by lorol in ESP32 core 1.x.x instead of built-in in 2.x.x
   -D LOROL_LITTLEFS
+  -D WLEDMM_TWOPATH    ;; use I2S1 as the second bus --> ~15% faster on "V3" builds
+  ; -D WLEDMM_SLOWPATH ;; don't use I2S for LED bus
   ; -DARDUINO_USB_CDC_ON_BOOT=0 ;; this flag is mandatory for "classic ESP32" when building with arduino-esp32 >=2.0.3
 
 default_partitions = tools/WLED_ESP32_4MB_1MB_FS.csv      ;; WLED standard for 4MB flash: 1.4MB firmware, 1MB filesystem
@@ -322,6 +324,7 @@ lib_deps =
   ; WLEDMM specific: use patched version of lorol LittleFS
   https://github.com/softhack007/LITTLEFS-threadsafe.git#master
   makuna/NeoPixelBus @ 2.7.5
+  ;; makuna/NeoPixelBus @ 2.7.9 ;; experimental
   ${env.lib_deps}
 
 ;; Compatibility with upstream --> you should prefer using ${common_mm.build_flags_S} and ${common_mm.lib_deps_S}
@@ -348,6 +351,8 @@ build_flagsV4 = -g
   -DCONFIG_LITTLEFS_FOR_IDF_3_2 -DLFS_THREADSAFE
   -D CONFIG_ASYNC_TCP_USE_WDT=0
   -D CONFIG_ASYNC_TCP_TASK_STACK_SIZE=9472              ;; WLEDMM increase stack by 1.25Kb, as audioreactive needs bigger SETTINGS_STACK_BUF_SIZE
+  ; -D WLEDMM_TWOPATH  ;; use I2S1 as the second bus --> slightly faster on some setups
+  ; -D WLEDMM_SLOWPATH ;; don't use I2S for LED bus
   ; -DARDUINO_USB_CDC_ON_BOOT=0 ;; mandatory for "classic ESP32" when building with arduino-esp32 >=2.0.3
   -D NO_GFX ; Disable the use of Adafruit_GFX by the HUB75 driver
 
@@ -355,6 +360,7 @@ build_flagsV4 = -g
 lib_depsV4 =
   https://github.com/pbolduc/AsyncTCP.git @ 1.2.0 ;; WLEDMM this must be first in the list, otherwise Aircoookie/ESPAsyncWebServer pulls in an older version of AsyncTCP !!
   makuna/NeoPixelBus @ 2.7.5
+  ;; makuna/NeoPixelBus @ 2.7.9 ;; experimental
   ${common_mm.HUB75_lib_deps}
   ${env.lib_deps}
 
@@ -380,6 +386,7 @@ default_partitions = tools/WLED_ESP32_4MB_1MB_FS.csv
 lib_deps =
   https://github.com/pbolduc/AsyncTCP.git @ 1.2.0
   makuna/NeoPixelBus @ 2.7.5
+  ;; makuna/NeoPixelBus @ 2.7.9 ;; experimental
   ${env.lib_deps}
 
 [esp32s2]
@@ -407,6 +414,7 @@ build_flags = -g
 lib_deps =
   https://github.com/pbolduc/AsyncTCP.git @ 1.2.0
   makuna/NeoPixelBus @ 2.7.5
+  ;; makuna/NeoPixelBus @ 2.7.9 ;; experimental
   ${env.lib_deps}
 
 [esp32c3]
@@ -428,6 +436,7 @@ build_flags = -g
 lib_deps =
   https://github.com/pbolduc/AsyncTCP.git @ 1.2.0
   makuna/NeoPixelBus @ 2.7.5
+  ;; makuna/NeoPixelBus @ 2.7.9 ;; experimental
   ${env.lib_deps}
 
 [esp32s3]
@@ -449,6 +458,7 @@ build_flags = -g
 lib_deps =
   https://github.com/pbolduc/AsyncTCP.git @ 1.2.0
   makuna/NeoPixelBus @ 2.7.5
+  ;; makuna/NeoPixelBus @ 2.7.9 ;; experimental
   ${env.lib_deps}