diff --git a/platformio.ini b/platformio.ini
index 94bb35e7..967a9a19 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -2461,12 +2461,17 @@ board_build.partitions = tools/WLED_ESP32_16MB.csv         ;; WLED standard for
 ;https://www.athom.tech/blank-1/wled-esp32-music-addressable-led-strip-controller
 [env:athom_music_esp32_4MB_M]
 extends = esp32_4MB_M_base
+build_unflags = ${common.build_unflags}
+  -D USERMOD_ARTIFX ;; disabled to save some program space in flash
+  -D USERMOD_DALLASTEMPERATURE ;; disabled - flash space is too tight for this
+  -D USERMOD_ROTARY_ENCODER_UI ;; see above
 build_flags = ${esp32_4MB_M_base.build_flags} 
   ${Athom_PDMmic.build_flags}
   -D WLED_AP_SSID_UNIQUE
   -D WLED_RELEASE_NAME=athom_music_esp32_4MB_M
   -D ABL_MILLIAMPS_DEFAULT=14500 ; max 15A
-  -D WLED_DISABLE_MQTT -D WLED_DISABLE_LOXONE 
+  ; -D WLED_DISABLE_MQTT
+  -D WLED_DISABLE_LOXONE
   -D WLED_DISABLE_ADALIGHT ;to get 4ld working
   -D BTNPIN=0 -D RLYPIN=2 -D IRPIN=25 -D IRTYPE=9 -D LEDPIN=18
   -D AUDIOPIN=-1 
@@ -2478,8 +2483,9 @@ build_flags = ${esp32_4MB_M_base.build_flags}
   ; -D PIR_SENSOR_PIN=-1
   ; -D PWM_PIN=-1
   ; -D WLED_USE_MY_CONFIG
-; RAM:   [===       ]  25.9% (used 84948 bytes from 327680 bytes)
-; Flash: [==========]  95.9% (used 1509113 bytes from 1572864 bytes)
+  -D WLEDMM_SAVE_FLASH
+; RAM:   [===       ]  26.3% (used 86204 bytes from 327680 bytes)
+; Flash: [========= ]  93.6% (used 1471681 bytes from 1572864 bytes)
 
 ;https://shop.myhome-control.de/Elektronik/
 [env:abc_wled_controller_v43_S]