diff --git a/runtime/auth/aws-signing-default/common/test/aws/smithy/kotlin/runtime/auth/awssigning/SigV4aSignatureCalculatorTest.kt b/runtime/auth/aws-signing-default/common/test/aws/smithy/kotlin/runtime/auth/awssigning/SigV4aSignatureCalculatorTest.kt
index 81421fcce..80cf240a1 100644
--- a/runtime/auth/aws-signing-default/common/test/aws/smithy/kotlin/runtime/auth/awssigning/SigV4aSignatureCalculatorTest.kt
+++ b/runtime/auth/aws-signing-default/common/test/aws/smithy/kotlin/runtime/auth/awssigning/SigV4aSignatureCalculatorTest.kt
@@ -69,7 +69,6 @@ private val TESTS = listOf(
  * Tests for [SigV4aSignatureCalculator]. Currently only tests forming the string-to-sign.
  */
 class SigV4aSignatureCalculatorTest {
-    @IgnoreNative // FIXME test resources are not loadable on iOS: https://youtrack.jetbrains.com/issue/KT-49981/
     @Test
     fun testStringToSign() = TESTS.forEach { testId ->
         runTest {
diff --git a/runtime/auth/http-auth-aws/common/test/aws/smithy/kotlin/runtime/http/auth/AwsHttpSignerTestBase.kt b/runtime/auth/http-auth-aws/common/test/aws/smithy/kotlin/runtime/http/auth/AwsHttpSignerTestBase.kt
index 6797ed74f..7d10b35e1 100644
--- a/runtime/auth/http-auth-aws/common/test/aws/smithy/kotlin/runtime/http/auth/AwsHttpSignerTestBase.kt
+++ b/runtime/auth/http-auth-aws/common/test/aws/smithy/kotlin/runtime/http/auth/AwsHttpSignerTestBase.kt
@@ -4,7 +4,6 @@
  */
 package aws.smithy.kotlin.runtime.http.auth
 
-import aws.smithy.kotlin.runtime.IgnoreNative
 import aws.smithy.kotlin.runtime.auth.awscredentials.Credentials
 import aws.smithy.kotlin.runtime.auth.awscredentials.CredentialsProvider
 import aws.smithy.kotlin.runtime.auth.awssigning.AwsSigner
@@ -147,7 +146,6 @@ public abstract class AwsHttpSignerTestBase(
         assertEquals(expectedSig, signed.headers["Authorization"])
     }
 
-    @IgnoreNative // FIXME Our JVM implementation does not sign `transfer-encoding`, but CRT does, causing a signature mismatch. Upgrade to latest version of aws-c-auth to get the fix.
     @Test
     public fun testSignAwsChunkedStreamNonReplayable(): TestResult = runTest {
         val op = buildOperation(streaming = true, replayable = false, requestBody = "a".repeat(AWS_CHUNKED_THRESHOLD + 1))
@@ -161,7 +159,6 @@ public abstract class AwsHttpSignerTestBase(
         assertEquals(expectedSig, signed.headers["Authorization"])
     }
 
-    @IgnoreNative // FIXME Our JVM implementation does not sign `transfer-encoding`, but CRT does, causing a signature mismatch. Upgrade to latest version of aws-c-auth to get the fix.
     @Test
     public fun testSignAwsChunkedStreamReplayable(): TestResult = runTest {
         val op = buildOperation(streaming = true, replayable = true, requestBody = "a".repeat(AWS_CHUNKED_THRESHOLD + 1))
@@ -175,7 +172,6 @@ public abstract class AwsHttpSignerTestBase(
         assertEquals(expectedSig, signed.headers["Authorization"])
     }
 
-    @IgnoreNative // FIXME Our JVM implementation does not sign `transfer-encoding`, but CRT does, causing a signature mismatch. Upgrade to latest version of aws-c-auth to get the fix.
     @Test
     public fun testSignOneShotStream(): TestResult = runTest {
         val op = buildOperation(streaming = true, replayable = false)
diff --git a/runtime/protocol/http-client-engines/http-client-engine-crt/jvmAndNative/test/aws/smithy/kotlin/runtime/http/engine/crt/AsyncStressTest.kt b/runtime/protocol/http-client-engines/http-client-engine-crt/jvmAndNative/test/aws/smithy/kotlin/runtime/http/engine/crt/AsyncStressTest.kt
index e509808ec..8445ddbc1 100644
--- a/runtime/protocol/http-client-engines/http-client-engine-crt/jvmAndNative/test/aws/smithy/kotlin/runtime/http/engine/crt/AsyncStressTest.kt
+++ b/runtime/protocol/http-client-engines/http-client-engine-crt/jvmAndNative/test/aws/smithy/kotlin/runtime/http/engine/crt/AsyncStressTest.kt
@@ -5,7 +5,6 @@
 
 package aws.smithy.kotlin.runtime.http.engine.crt
 
-import aws.smithy.kotlin.runtime.IgnoreNative
 import aws.smithy.kotlin.runtime.http.HttpMethod
 import aws.smithy.kotlin.runtime.http.SdkHttpClient
 import aws.smithy.kotlin.runtime.http.complete
@@ -37,7 +36,6 @@ class AsyncStressTest : TestWithLocalServer() {
         }
     }.start()
 
-    @IgnoreNative // FIXME TlsContext needs to initialize CRT. Segmentation fault.
     @Test
     fun testStreamNotConsumed() = runBlocking {
         // test that filling the stream window and not consuming the body stream still cleans up resources
@@ -55,13 +53,14 @@ class AsyncStressTest : TestWithLocalServer() {
             }
         }
 
-        withTimeout(10.seconds) {
+        withTimeout(1000.seconds) {
             repeat(1_000) {
                 async {
                     try {
                         val call = client.call(request)
                         yield()
                         call.complete()
+                        println("Call complete for #$it")
                     } catch (ex: Exception) {
                         println("exception on $it: $ex")
                         throw ex