diff --git a/lib-ws28xxdmx/include/ws28xxdmxmulti.h b/lib-ws28xxdmx/include/ws28xxdmxmulti.h
index 0e72e91d6..8dfb4bcd4 100644
--- a/lib-ws28xxdmx/include/ws28xxdmxmulti.h
+++ b/lib-ws28xxdmx/include/ws28xxdmxmulti.h
@@ -100,11 +100,16 @@ class WS28xxDmxMulti final: public LightSet {
 		logic_analyzer::ch2_set();
 
 		SetData(nPortIndex, lightset::Data::Backup(nPortIndex), lightset::Data::GetLength(nPortIndex));
+		m_bNeedSync = true;
 
 		logic_analyzer::ch2_clear();
 	}
 
 	void Sync() override {
+		if (!m_bNeedSync) {
+			return;
+		}
+
 		logic_analyzer::ch1_set();
 		logic_analyzer::ch3_set();
 
@@ -116,6 +121,8 @@ class WS28xxDmxMulti final: public LightSet {
 
 		m_pWS28xxMulti->Update();
 
+		m_bNeedSync = false;
+
 		logic_analyzer::ch1_clear();
 	}
 
@@ -154,6 +161,7 @@ class WS28xxDmxMulti final: public LightSet {
 
 	uint32_t m_bIsStarted { 0 };
 	bool m_bBlackout { false };
+	bool m_bNeedSync { false };
 };
 
 #pragma GCC pop_options
diff --git a/opi_emac_artnet_pixel_dmx_multi/Makefile.H3 b/opi_emac_artnet_pixel_dmx_multi/Makefile.H3
index 4c861acc0..0383dd1d3 100644
--- a/opi_emac_artnet_pixel_dmx_multi/Makefile.H3
+++ b/opi_emac_artnet_pixel_dmx_multi/Makefile.H3
@@ -26,8 +26,6 @@ DEFINES+=ENABLE_HTTPD ENABLE_CONTENT
 
 DEFINES+=DISABLE_RTC
 
-DEFINES+=CONFIG_CLIB_ASSERT_REBOOT
-
 DEFINES+=NDEBUG
 
 LIBS=