Reduce ram and SPI speed

Marlin/Configuration.h

@@ -30,7 +30,7 @@
 
 #define tallVersion
 
-//#define ABL_Bilinear
+#define ABL_Bilinear
 /*
  * Enables a filament sensor plugged into the laser pin. Disables the laser
  */
@@ -2685,6 +2685,7 @@
  * SD Card support is disabled by default. If your controller has an SD slot,
  * you must uncomment the following option or it won't work.
  */
+#define SD_SPI_SPEED        SPI_HALF_SPEED
 #define SDSUPPORT
 
 /**

Marlin/Configuration_adv.h

@@ -1610,7 +1610,7 @@
 
   // Allow international symbols in long filenames. To display correctly, the
   // LCD's font must contain the characters. Check your selected LCD language.
-  //#define UTF_FILENAME_SUPPORT
+  #define UTF_FILENAME_SUPPORT
 
   #define LONG_FILENAME_HOST_SUPPORT    // Get the long filename of a file/folder with 'M33 <dosname>' and list long filenames with 'M20 L'
   //#define LONG_FILENAME_WRITE_SUPPORT   // Create / delete files with long filenames via M28, M30, and Binary Transfer Protocol

Marlin/src/module/settings.cpp

@@ -3231,7 +3231,7 @@ void MarlinSettings::reset() {
     #if ENABLED(DISTINCT_E_FACTORS)
       constexpr float linAdvanceK[] = ADVANCE_K;
       EXTRUDER_LOOP() {
-        const float a = linAdvanceK[_MAX(e, COUNT(linAdvanceK) - 1)];
+        const float a = linAdvanceK[_MAX(e, (int8_t)COUNT(linAdvanceK) - 1)];
         planner.extruder_advance_K[e] = a;
         TERN_(ADVANCE_K_EXTRA, other_extruder_advance_K[e] = a);
       }