diff --git a/platformio.ini b/platformio.ini
index ab7e463..4fb7d33 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -115,7 +115,7 @@ extra_scripts =
 	script/create_versionjson.py
 build_unflags = ${common_env_data.build_unflags}
 build_flags = 
-    ${common_env_data.build_flags}
+	${common_env_data.build_flags}
 	-D COLLECT_PERFDATA	
 	-D LOG_LEVEL=5
 lib_deps = 
@@ -159,6 +159,32 @@ board_build.partitions = part32.csv
 board_build.filesystem = littlefs 
 monitor_filters = esp32_exception_decoder
 
+[env:gravity32-perf]
+framework = arduino
+platform = espressif32
+upload_speed = ${common_env_data.upload_speed}
+monitor_speed = ${common_env_data.monitor_speed}
+extra_scripts =  
+	script/copy_html.py
+	script/copy_firmware.py
+	script/create_versionjson.py
+build_unflags = 
+	${common_env_data.build_unflags}
+build_flags = 
+	-Wl,-Map,output.map
+	${common_env_data.build_flags}
+	-D COLLECT_PERFDATA	
+	-D LOG_LEVEL=5
+lib_deps = 
+	${common_env_data.lib_deps}
+	https://github.com/lorol/LITTLEFS#1.0.6
+  https://github.com/h2zero/NimBLE-Arduino#1.3.7
+board = featheresp32
+build_type = release
+board_build.partitions = part32.csv
+board_build.filesystem = littlefs 
+monitor_filters = esp32_exception_decoder
+
 [env:gravity32-release2]
 framework = arduino
 #platform = https://github.com/tasmota/platform-espressif32/releases/download/v2.0.2.3/platform-espressif32-2.0.2.3.zip # build fails
diff --git a/script/copy_firmware.py b/script/copy_firmware.py
index e25edf0..b23b2d3 100644
--- a/script/copy_firmware.py
+++ b/script/copy_firmware.py
@@ -20,6 +20,8 @@ def after_build(source, target, env):
         target = dir + "/bin/firmware-perf.bin"
     if name == "gravity32-release" :
         target = dir + "/bin/firmware32.bin"
+    if name == "gravity32-perf" :
+        target = dir + "/bin/firmware32-perf.bin"
     if name == "gravity32-release2" :
         target = dir + "/bin/firmware32_2.bin"
     print( "Copy file : " + source + " -> " + target )