diff --git a/CHANGELOG.md b/CHANGELOG.md
index 38989311d9..7a2f835be0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,8 @@
 - (Internal) Metrics code cleanup ([#3403](https://github.com/getsentry/sentry-java/pull/3403))
 - Fix Frame measurements in app start transactions ([#3382](https://github.com/getsentry/sentry-java/pull/3382))
 - Fix timing metric value different from span duration ([#3368](https://github.com/getsentry/sentry-java/pull/3368))
+- Do not always write startup crash marker ([#3409](https://github.com/getsentry/sentry-java/pull/3409))
+  - This may have been causing the SDK init logic to block the main thread
 
 ## 7.8.0
 
diff --git a/sentry-android-core/src/main/java/io/sentry/android/core/cache/AndroidEnvelopeCache.java b/sentry-android-core/src/main/java/io/sentry/android/core/cache/AndroidEnvelopeCache.java
index 28090ef6c7..fb5e81cfa9 100644
--- a/sentry-android-core/src/main/java/io/sentry/android/core/cache/AndroidEnvelopeCache.java
+++ b/sentry-android-core/src/main/java/io/sentry/android/core/cache/AndroidEnvelopeCache.java
@@ -57,7 +57,7 @@ public void store(@NotNull SentryEnvelope envelope, @NotNull Hint hint) {
     if (HintUtils.hasType(hint, UncaughtExceptionHandlerIntegration.UncaughtExceptionHint.class)
         && sdkInitTimeSpan.hasStarted()) {
       long timeSinceSdkInit =
-          currentDateProvider.getCurrentTimeMillis() - sdkInitTimeSpan.getStartTimestampMs();
+          currentDateProvider.getCurrentTimeMillis() - sdkInitTimeSpan.getStartUptimeMs();
       if (timeSinceSdkInit <= options.getStartupCrashDurationThresholdMillis()) {
         options
             .getLogger()
diff --git a/sentry-android-core/src/test/java/io/sentry/android/core/cache/AndroidEnvelopeCacheTest.kt b/sentry-android-core/src/test/java/io/sentry/android/core/cache/AndroidEnvelopeCacheTest.kt
index 92b5d773fd..ba70e5a879 100644
--- a/sentry-android-core/src/test/java/io/sentry/android/core/cache/AndroidEnvelopeCacheTest.kt
+++ b/sentry-android-core/src/test/java/io/sentry/android/core/cache/AndroidEnvelopeCacheTest.kt
@@ -51,10 +51,8 @@ class AndroidEnvelopeCacheTest {
                 AppStartMetrics.getInstance().apply {
                     if (options.isEnablePerformanceV2) {
                         appStartTimeSpan.setStartedAt(appStartMillis)
-                        appStartTimeSpan.setStartUnixTimeMs(appStartMillis)
                     } else {
                         sdkInitTimeSpan.setStartedAt(appStartMillis)
-                        sdkInitTimeSpan.setStartUnixTimeMs(appStartMillis)
                     }
                 }
             }