diff --git a/src/graphics/guest_gpu/graphicsRun.cpp b/src/graphics/guest_gpu/graphicsRun.cpp
index dcdc8a8c7..086d1e83d 100644
--- a/src/graphics/guest_gpu/graphicsRun.cpp
+++ b/src/graphics/guest_gpu/graphicsRun.cpp
@@ -386,8 +386,12 @@ void CommandProcessor::WriteReferenceClock(uint64_t dst_address, uint32_t num_by
 	}
 	const auto value = Sync::ReadReferenceClock();
 	std::memcpy(reinterpret_cast<void*>(dst_address), &value, num_bytes);
-	LOGF("\t copy_data reference clock: dst=0x%016" PRIx64 " value=0x%016" PRIx64 " size=%u\n",
-	     dst_address, value, num_bytes);
+	static std::atomic<uint32_t> clock_log_count {0};
+	if (clock_log_count.fetch_add(1) < 64) {
+		LOGF("\t copy_data reference clock: dst=0x%016" PRIx64 " value=0x%016" PRIx64
+		     " size=%u\n",
+		     dst_address, value, num_bytes);
+	}
 }
 
 void CommandProcessor::DmaData(uint8_t engine, uint8_t dst_sel, uint8_t dst_cache_policy,
diff --git a/src/launcher/src/configurationEditDialog.cpp b/src/launcher/src/configurationEditDialog.cpp
index f68dd3e38..32e38e311 100644
--- a/src/launcher/src/configurationEditDialog.cpp
+++ b/src/launcher/src/configurationEditDialog.cpp
@@ -213,7 +213,7 @@ void ConfigurationEditDialog::Init(const Configuration& info) {
 #endif
 	QVulkanInstance instance;
 	instance.setApiVersion(QVersionNumber(1, 3, 0));
-#if !defined(__APPLE__)
+#if !defined(__APPLE__) && QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
 	instance.setFlags(QVulkanInstance::NoPortabilityDrivers);
 #endif
 	if (instance.create()) {