diff --git a/gradle/plugins/src/main/kotlin/com.hedera.gradle.java.gradle.kts b/gradle/plugins/src/main/kotlin/com.hedera.gradle.java.gradle.kts
index 037c2d2b0..db6a9e48f 100644
--- a/gradle/plugins/src/main/kotlin/com.hedera.gradle.java.gradle.kts
+++ b/gradle/plugins/src/main/kotlin/com.hedera.gradle.java.gradle.kts
@@ -73,7 +73,13 @@ tasks.withType<Javadoc>().configureEach {
     }
 }
 
+tasks.withType<Test>().configureEach {
+    failFast = true
+    maxParallelForks = (Runtime.getRuntime().availableProcessors() / 2).coerceAtLeast(1)
+}
+
 tasks.jacocoTestReport {
+    dependsOn(tasks.withType<Test>())
     // make sure to use any/all test coverage data for the report and run all tests before this report is made
     executionData.from(
         tasks.test.map { it.extensions.getByType<JacocoTaskExtension>().destinationFile!! },
diff --git a/sdk/src/main/java/com/hedera/hashgraph/sdk/TransactionId.java b/sdk/src/main/java/com/hedera/hashgraph/sdk/TransactionId.java
index abcbb4938..df5ab47b0 100644
--- a/sdk/src/main/java/com/hedera/hashgraph/sdk/TransactionId.java
+++ b/sdk/src/main/java/com/hedera/hashgraph/sdk/TransactionId.java
@@ -27,6 +27,7 @@
 import java.time.Duration;
 import java.time.Instant;
 import java.util.Objects;
+import java.util.Random;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicLong;
@@ -68,6 +69,7 @@ public final class TransactionId implements Comparable<TransactionId> {
 
     private static final long NANOSECONDS_TO_REMOVE = 10000000000L;
 
+    private static final Random randomNanosecs = new Random();
     private static final AtomicLong monotonicTime = new AtomicLong();
 
 
@@ -115,6 +117,7 @@ public static TransactionId generate(AccountId accountId) {
             // between the client and the receiving node and prevented spurious INVALID_TRANSACTION_START.
             currentTime = System.currentTimeMillis() * NANOSECONDS_PER_MILLISECOND - NANOSECONDS_TO_REMOVE;
 
+
             // Get the last recorded timestamp.
             lastTime = monotonicTime.get();
 
@@ -125,7 +128,7 @@ public static TransactionId generate(AccountId accountId) {
             }
         } while (!monotonicTime.compareAndSet(lastTime, currentTime));
 
-        return new TransactionId(accountId, Instant.ofEpochSecond(0, currentTime));
+        return new TransactionId(accountId, Instant.ofEpochSecond(0, currentTime + randomNanosecs.nextLong(1_000)));
     }
 
     /**
diff --git a/sdk/src/testIntegration/java/com/hedera/hashgraph/sdk/test/integration/IntegrationTestEnv.java b/sdk/src/testIntegration/java/com/hedera/hashgraph/sdk/test/integration/IntegrationTestEnv.java
index 359d24b99..86037ebdc 100644
--- a/sdk/src/testIntegration/java/com/hedera/hashgraph/sdk/test/integration/IntegrationTestEnv.java
+++ b/sdk/src/testIntegration/java/com/hedera/hashgraph/sdk/test/integration/IntegrationTestEnv.java
@@ -36,6 +36,8 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 import javax.annotation.Nullable;
 import org.junit.jupiter.api.Assumptions;
 
@@ -48,6 +50,7 @@ public class IntegrationTestEnv implements AutoCloseable {
     public PublicKey operatorKey;
     public AccountId operatorId;
     public boolean isLocalNode = false;
+    private static ExecutorService clientExecutor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
 
     public IntegrationTestEnv() throws Exception {
         this(0);
@@ -104,7 +107,7 @@ private static Client createTestEnvClient() throws Exception {
             network.put(LOCAL_CONSENSUS_NODE_ENDPOINT, LOCAL_CONSENSUS_NODE_ACCOUNT_ID);
 
             return Client
-                .forNetwork(network)
+                .forNetwork(network, clientExecutor)
                 .setMirrorNetwork(List.of(LOCAL_MIRROR_NODE_GRPC_ENDPOINT));
         } else if (!System.getProperty("CONFIG_FILE").equals("")) {
             try {
@@ -152,19 +155,23 @@ public void assumeNotLocalNode() throws Exception {
     @Override
     public void close() throws Exception {
         if (!operatorId.equals(originalClient.getOperatorAccountId())) {
-            var hbarsBalance = new AccountBalanceQuery()
-                .setAccountId(operatorId)
-                .execute(originalClient)
-                .hbars;
-            new TransferTransaction()
-                .addHbarTransfer(operatorId, hbarsBalance.negated())
-                .addHbarTransfer(Objects.requireNonNull(originalClient.getOperatorAccountId()), hbarsBalance)
-                .freezeWith(originalClient)
-                .signWithOperator(client)
-                .execute(originalClient);
-            client.close();
+            try {
+                var hbarsBalance = new AccountBalanceQuery()
+                    .setAccountId(operatorId)
+                    .execute(originalClient)
+                    .hbars;
+                new TransferTransaction()
+                    .addHbarTransfer(operatorId, hbarsBalance.negated())
+                    .addHbarTransfer(Objects.requireNonNull(originalClient.getOperatorAccountId()), hbarsBalance)
+                    .freezeWith(originalClient)
+                    .signWithOperator(client)
+                    .execute(originalClient)
+                    .getReceipt(originalClient);
+
+            } catch (Exception e) {
+                client.close();
+            }
         }
-
         originalClient.close();
     }