diff --git a/Makefiles/Options.inc b/Makefiles/Options.inc
index f5761af..b673941 100644
--- a/Makefiles/Options.inc
+++ b/Makefiles/Options.inc
@@ -54,7 +54,7 @@ endif
 #
 # Enable support for Model3 Net Board emulation
 #
-NET_BOARD =
+NET_BOARD = 1
 ifneq ($(filter $(strip $(NET_BOARD)),0 1),$(strip $(NET_BOARD)))
 	override NET_BOARD =
 endif
diff --git a/Makefiles/Rules.inc b/Makefiles/Rules.inc
index 44ca692..1b77b58 100644
--- a/Makefiles/Rules.inc
+++ b/Makefiles/Rules.inc
@@ -70,7 +70,7 @@ endif
 # Compiler options
 #
 ARCH =
-OPT = -Ofast
+OPT = -O3
 WARN = -Wall
 CSTD = -std=iso9899:2011
 CXXSTD = -std=c++14