diff --git a/doc/host_config_schema/cchost_config.json b/doc/host_config_schema/cchost_config.json
index fb3bd186f0e8..d28c8f98ec54 100644
--- a/doc/host_config_schema/cchost_config.json
+++ b/doc/host_config_schema/cchost_config.json
@@ -661,17 +661,17 @@
       "properties": {
         "circuit_size": {
           "type": "string",
-          "default": "4MB",
+          "default": "16MB",
           "description": "Size (size string) of the internal host-enclave ringbuffers (must be a power of 2)"
         },
         "max_msg_size": {
           "type": "string",
-          "default": "16MB",
+          "default": "64MB",
           "description": "Maximum size (size string) for a message sent over the ringbuffer. Messages may be split into multiple fragments, but this limits the total size of the sum of those fragments"
         },
         "max_fragment_size": {
           "type": "string",
-          "default": "64KB",
+          "default": "256KB",
           "description": "Maximum size (size string) of individual ringbuffer message fragments. Messages larger than this will be split into multiple fragments"
         }
       },
diff --git a/samples/config/join_config.json b/samples/config/join_config.json
index cd51cdadac8d..03bff08d5b3e 100644
--- a/samples/config/join_config.json
+++ b/samples/config/join_config.json
@@ -64,8 +64,8 @@
   "client_connection_timeout": "2000ms",
   "worker_threads": 0,
   "memory": {
-    "circuit_size": "4MB",
-    "max_msg_size": "16MB",
-    "max_fragment_size": "64KB"
+    "circuit_size": "16MB",
+    "max_msg_size": "64MB",
+    "max_fragment_size": "256KB"
   }
 }
diff --git a/samples/config/recover_config.json b/samples/config/recover_config.json
index 8a5d73fd820c..3c3ecb284af9 100644
--- a/samples/config/recover_config.json
+++ b/samples/config/recover_config.json
@@ -64,8 +64,8 @@
   "client_connection_timeout": "2000ms",
   "worker_threads": 0,
   "memory": {
-    "circuit_size": "4MB",
-    "max_msg_size": "16MB",
-    "max_fragment_size": "64KB"
+    "circuit_size": "16MB",
+    "max_msg_size": "64MB",
+    "max_fragment_size": "256KB"
   }
 }
diff --git a/samples/config/start_config.json b/samples/config/start_config.json
index 5e0eed1ba5de..eaae939eccec 100644
--- a/samples/config/start_config.json
+++ b/samples/config/start_config.json
@@ -88,8 +88,8 @@
   "client_connection_timeout": "2000ms",
   "worker_threads": 0,
   "memory": {
-    "circuit_size": "4MB",
-    "max_msg_size": "16MB",
-    "max_fragment_size": "64KB"
+    "circuit_size": "16MB",
+    "max_msg_size": "64MB",
+    "max_fragment_size": "256KB"
   }
 }
diff --git a/src/host/configuration.h b/src/host/configuration.h
index b61f20bfb9d1..824feb0e0e52 100644
--- a/src/host/configuration.h
+++ b/src/host/configuration.h
@@ -122,9 +122,9 @@ namespace host
 
     struct Memory
     {
-      ds::SizeString circuit_size = {"4MB"};
-      ds::SizeString max_msg_size = {"16MB"};
-      ds::SizeString max_fragment_size = {"64KB"};
+      ds::SizeString circuit_size = {"16MB"};
+      ds::SizeString max_msg_size = {"64MB"};
+      ds::SizeString max_fragment_size = {"256KB"};
 
       bool operator==(const Memory&) const = default;
     };
diff --git a/tests/config.jinja b/tests/config.jinja
index 5701ea32a29d..849f6f7acfb8 100644
--- a/tests/config.jinja
+++ b/tests/config.jinja
@@ -94,9 +94,9 @@
   "node_client_interface": {{ node_client_interface|tojson }},
   "worker_threads": {{ worker_threads }},
   "memory": {
-    "circuit_size": "4MB",
+    "circuit_size": "16MB",
     "max_msg_size": "{{ max_msg_size_bytes }}",
-    "max_fragment_size": "64KB"
+    "max_fragment_size": "256KB"
   },
   "ignore_first_sigterm": {{ ignore_first_sigterm|tojson }}{% if node_to_node_message_limit %},
   "node_to_node_message_limit": {{ node_to_node_message_limit|tojson }}{% endif %}
diff --git a/tests/e2e_batched.py b/tests/e2e_batched.py
index a8d98afdef8f..c62195ea2634 100644
--- a/tests/e2e_batched.py
+++ b/tests/e2e_batched.py
@@ -111,7 +111,7 @@ def run_to_destruction(args):
                     wsm += 50000  # Grow very quickly, expect to fail on the second iteration
 
         except Exception as e:
-            timeout = 10
+            timeout = 120
 
             LOG.info("Large write set caused an exception, as expected")
             LOG.info(f"Exception was: {e}")
@@ -120,10 +120,11 @@ def run_to_destruction(args):
             end_time = time.time() + timeout
             while time.time() < end_time:
                 time.sleep(0.1)
-                exit_code = network.nodes[0].remote.remote.proc.poll()
-                if exit_code is not None:
-                    LOG.info(f"Node terminated with exit code {exit_code}")
-                    assert exit_code != 0
+                exit_codes = [node.remote.remote.proc.poll() for node in network.nodes]
+                if any(exit_codes):
+                    LOG.info(
+                        f"One or more nodes terminated with exit codes {exit_codes}"
+                    )
                     break
 
             if time.time() > end_time:
diff --git a/tests/e2e_operations.py b/tests/e2e_operations.py
index 649a8eb7c554..b4e821190fb2 100644
--- a/tests/e2e_operations.py
+++ b/tests/e2e_operations.py
@@ -264,7 +264,7 @@ def run_file_operations(args):
         json.dump(service_data, ntf)
         ntf.flush()
 
-        args.max_msg_size_bytes = f"{100 * 1024}"  # 100KB
+        args.max_msg_size_bytes = f"{1024 ** 2}"
 
         with tempfile.TemporaryDirectory() as tmp_dir:
             txs = app.LoggingTxs("user0")
diff --git a/tests/infra/e2e_args.py b/tests/infra/e2e_args.py
index 3f4c165308be..ff3d63d6657b 100644
--- a/tests/infra/e2e_args.py
+++ b/tests/infra/e2e_args.py
@@ -406,7 +406,7 @@ def cli_args(
         "--max-msg-size-bytes",
         help="Maximum message size (bytes) allowed on the ring buffer",
         type=str,
-        default="16MB",
+        default="64MB",
     )
     parser.add_argument(
         "--gov-api-version",