try nodelay on loop

platformio.ini

@@ -13,7 +13,7 @@ platform = https://github.com/maxgerhardt/platform-raspberrypi.git
 board = pico
 framework = arduino
 platform_packages = 
-	framework-arduinopico@https://github.com/earlephilhower/arduino-pico.git#c64a4a58d793ee6d24c7df7ff3ec35adac3bbb45
+	framework-arduinopico@https://github.com/earlephilhower/arduino-pico.git#lw
 board_build.core = earlephilhower
 upload_port = /run/media/amelia/RPI-RP2/
 debug_tool = cmsis-dap
@@ -22,6 +22,6 @@ monitor_speed = 115200
 board_build.filesystem_size = 1m 
 board_build.f_cpu = 133000000L
 ; build_flags = -Os
-; board_flags = -DWIFICC=CYW43_COUNTRY_USA
+; board_flags = -DWIFICC=CYW43_COUNTRY_USA 
 lib_deps =  
 	https://github.com/FastLED/FastLED#master

src/main.cpp

@@ -133,7 +133,7 @@ void loop() {
     // as all local functions count from 0
     //delay(0);
     Serial.println("Got valid packet of size " + String(size) + " at " + String(millis()/1000.0));
-    delayMicroseconds(5000);
+    //delayMicroseconds(1000);
     nopackets = 0;
   }
   else {