- switch to opus decoder

- directly write i2s from sync task
  o use DMA events to ensure buffer is empty on hard sync
- add i2s playback task
  o try synced playback using i2s DMA events and task notifications
- drop short latency buffers

sdkconfig

@@ -286,9 +286,9 @@ CONFIG_ESP_DISPATCHER_DELEGATE_STACK_SIZE=4096
 #
 # Compiler options
 #
-CONFIG_COMPILER_OPTIMIZATION_DEFAULT=y
+# CONFIG_COMPILER_OPTIMIZATION_DEFAULT is not set
 # CONFIG_COMPILER_OPTIMIZATION_SIZE is not set
-# CONFIG_COMPILER_OPTIMIZATION_PERF is not set
+CONFIG_COMPILER_OPTIMIZATION_PERF=y
 # CONFIG_COMPILER_OPTIMIZATION_NONE is not set
 CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_ENABLE=y
 # CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT is not set
@@ -774,7 +774,6 @@ CONFIG_FREERTOS_TIMER_QUEUE_LENGTH=10
 CONFIG_FREERTOS_QUEUE_REGISTRY_SIZE=0
 # CONFIG_FREERTOS_USE_TRACE_FACILITY is not set
 # CONFIG_FREERTOS_GENERATE_RUN_TIME_STATS is not set
-CONFIG_FREERTOS_TASK_FUNCTION_WRAPPER=y
 CONFIG_FREERTOS_CHECK_MUTEX_GIVEN_BY_OWNER=y
 # CONFIG_FREERTOS_CHECK_PORT_CRITICAL_COMPLIANCE is not set
 CONFIG_FREERTOS_DEBUG_OCDAWARE=y
@@ -1258,7 +1257,7 @@ CONFIG_MONITOR_BAUD_115200B=y
 # CONFIG_MONITOR_BAUD_OTHER is not set
 CONFIG_MONITOR_BAUD_OTHER_VAL=115200
 CONFIG_MONITOR_BAUD=115200
-CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG=y
+# CONFIG_COMPILER_OPTIMIZATION_LEVEL_DEBUG is not set
 # CONFIG_COMPILER_OPTIMIZATION_LEVEL_RELEASE is not set
 CONFIG_OPTIMIZATION_ASSERTIONS_ENABLED=y
 # CONFIG_OPTIMIZATION_ASSERTIONS_SILENT is not set

sdkconfig.old

@@ -869,7 +869,7 @@ CONFIG_LWIP_TCP_HIGH_SPEED_RETRANSMISSION=y
 CONFIG_LWIP_TCP_MAXRTX=12
 CONFIG_LWIP_TCP_SYNMAXRTX=6
 CONFIG_LWIP_TCP_MSS=1440
-CONFIG_LWIP_TCP_TMR_INTERVAL=250
+CONFIG_LWIP_TCP_TMR_INTERVAL=100
 CONFIG_LWIP_TCP_MSL=60000
 CONFIG_LWIP_TCP_SND_BUF_DEFAULT=18432
 CONFIG_LWIP_TCP_WND_DEFAULT=65534