diff --git a/Makefile.miyoo b/Makefile.miyoo
index 2880af10ad..f1a785f818 100644
--- a/Makefile.miyoo
+++ b/Makefile.miyoo
@@ -124,7 +124,7 @@ DEF_FLAGS += -I. -Ideps -Ideps/stb -DMIYOO=1 -DDINGUX -MMD
 DEF_FLAGS += -Wall -Wno-unused-variable -flto
 DEF_FLAGS += -std=gnu99 -D_GNU_SOURCE
 LIBS := -ldl -lz -lrt -pthread -lasound
-CFLAGS :=
+CFLAGS := -Ofast -fdata-sections -ffunction-sections -fsingle-precision-constant -fno-PIC -flto
 CXXFLAGS := -fno-exceptions -fno-rtti -std=c++11 -D__STDC_CONSTANT_MACROS
 ASFLAGS :=
 LDFLAGS := -Wl,--gc-sections
diff --git a/config.def.h b/config.def.h
index 25f0dbe463..a53076361c 100644
--- a/config.def.h
+++ b/config.def.h
@@ -356,7 +356,7 @@
 #define DEFAULT_DISABLE_COMPOSITION false
 
 /* Video VSYNC (recommended) */
-#define DEFAULT_VSYNC true
+#define DEFAULT_VSYNC false
 
 /* Vulkan specific */
 #define DEFAULT_MAX_SWAPCHAIN_IMAGES 3
@@ -513,7 +513,7 @@
 #if defined(DINGUX)
 /* Enables aspect ratio correction (1:1 PAR) when
  * using the IPU hardware scaler in Dingux devices */
-#define DEFAULT_DINGUX_IPU_KEEP_ASPECT true
+#define DEFAULT_DINGUX_IPU_KEEP_ASPECT false
 /* Sets image filtering method when using the
  * IPU hardware scaler in Dingux devices */
 #if defined(RETROFW)