diff --git a/fedn/network/clients/grpc_handler.py b/fedn/network/clients/grpc_handler.py
index e94f2d8f..9858c530 100644
--- a/fedn/network/clients/grpc_handler.py
+++ b/fedn/network/clients/grpc_handler.py
@@ -26,7 +26,6 @@
 MAX_CONNECTION_IDLE_MS = 30000
 MAX_CONNECTION_AGE_GRACE_MS = "INT_MAX"  # keep connection open indefinitely
 CLIENT_IDLE_TIMEOUT_MS = 30000
-MAX_MESSAGE_LENGTH = 10 * 1024 * 1024
 
 GRPC_OPTIONS = [
     ("grpc.keepalive_time_ms", KEEPALIVE_TIME_MS),
@@ -36,8 +35,6 @@
     ("grpc.max_connection_idle_ms", MAX_CONNECTION_IDLE_MS),
     ("grpc.max_connection_age_grace_ms", MAX_CONNECTION_AGE_GRACE_MS),
     ("grpc.client_idle_timeout_ms", CLIENT_IDLE_TIMEOUT_MS),
-    ('grpc.max_send_message_length', MAX_MESSAGE_LENGTH),
-    ('grpc.max_receive_message_length', MAX_MESSAGE_LENGTH),
 ]
 
 
diff --git a/fedn/network/combiner/modelservice.py b/fedn/network/combiner/modelservice.py
index 76702e94..ef5f9a75 100644
--- a/fedn/network/combiner/modelservice.py
+++ b/fedn/network/combiner/modelservice.py
@@ -9,7 +9,7 @@
 from fedn.common.log_config import logger
 from fedn.network.storage.models.tempmodelstorage import TempModelStorage
 
-CHUNK_SIZE = 4 * 1024 * 1024
+CHUNK_SIZE = 2 * 1024 * 1024
 
 
 def upload_request_generator(mdl, id):
diff --git a/fedn/network/grpc/server.py b/fedn/network/grpc/server.py
index a4e24f58..a581c16b 100644
--- a/fedn/network/grpc/server.py
+++ b/fedn/network/grpc/server.py
@@ -33,7 +33,7 @@ def __init__(self, servicer, config: ServerConfig):
         KEEPALIVE_TIMEOUT_MS = 20 * 1000
         # max idle time before server terminates the connection (5 minutes)
         MAX_CONNECTION_IDLE_MS = 5 * 60 * 1000
-        MAX_MESSAGE_LENGTH = 10 * 1024 * 1024
+        MAX_MESSAGE_LENGTH = 100 * 1024 * 1024
 
         self.server = grpc.server(
             futures.ThreadPoolExecutor(max_workers=350),