diff --git a/CHANGELOG.md b/CHANGELOG.md
index a31c2c2..0126427 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## v1.15
+
+### Changed
+* Updated kernel tuning parameters
+
 ## v1.14
 
 ## v1.13
diff --git a/tunnel/funcs.go b/tunnel/funcs.go
index 64c9c59..dabc995 100644
--- a/tunnel/funcs.go
+++ b/tunnel/funcs.go
@@ -253,8 +253,8 @@ func (t *Tunnel) Init(mode, main_network_interface string, dynamic_ip_updater_ap
 		}
 	}
 
-	utils.Cmd("tc qdisc replace dev "+t.TunnelInterfaceName+" root fq_codel limit 999999", true, true)
-	utils.Cmd("ip link set "+t.TunnelInterfaceName+" txqueuelen 999999", true, true)
+	utils.Cmd("tc qdisc replace dev "+t.TunnelInterfaceName+" root fq limit 99999 flow_limit 99999", true, true)
+	utils.Cmd("ip link set "+t.TunnelInterfaceName+" txqueuelen 99999", true, true)
 
 	t.IsInitialised = true
 
diff --git a/utils/tuning.go b/utils/tuning.go
index 169a9c4..410aa25 100644
--- a/utils/tuning.go
+++ b/utils/tuning.go
@@ -31,24 +31,23 @@ func SysTuning(shouldEnableIPIPmod, shouldEnableGREmod, shouldEnableWGmod bool,
 			Cmd("sysctl -w fs.aio-max-nr=2097152", true, true)
 			Cmd("sysctl -w net.ipv4.tcp_syncookies=1", true, true)
 			Cmd("sysctl -w net.core.somaxconn=65535", true, true)
-			Cmd("sysctl -w net.ipv4.tcp_max_syn_backlog=4096", true, true)
-			Cmd("sysctl -w net.core.netdev_max_backlog=999999", true, true)
-			Cmd("sysctl -w net.core.dev_weight=128", true, true)
+			Cmd("sysctl -w net.ipv4.tcp_max_syn_backlog=65535", true, true)
+			Cmd("sysctl -w net.core.netdev_max_backlog=99999", true, true)
 			Cmd("sysctl -w net.ipv4.ip_local_port_range=\"16384 65535\"", true, true)
 			Cmd("sysctl -w net.nf_conntrack_max=1000000", true, true)
 			Cmd("sysctl -w net.netfilter.nf_conntrack_max=1000000", true, true)
 			Cmd("sysctl -w net.ipv4.tcp_max_tw_buckets=1440000", true, true)
-			Cmd("sysctl -w net.ipv4.tcp_congestion_control=cubic", true, true)
-			Cmd("sysctl -w net.core.default_qdisc=fq_codel", true, true)
+			Cmd("sysctl -w net.ipv4.tcp_congestion_control=bbr", true, true)
+			Cmd("sysctl -w net.core.default_qdisc=fq", true, true)
 
 			Cmd("sysctl -w net.ipv4.tcp_mtu_probing=1", true, true)
 
 			Cmd("sysctl -w net.ipv4.route.flush=1", true, true)
 			Cmd("sysctl -w net.ipv6.route.flush=1", true, true)
 
-			Cmd("modprobe tcp_cubic", true, true)
-			Cmd("tc qdisc replace dev "+mainNetworkInterface+" root fq_codel limit 999999", true, true)
-			Cmd("ip link set "+mainNetworkInterface+" txqueuelen 999999", true, true)
+			Cmd("modprobe tcp_bbr", true, true)
+			Cmd("tc qdisc replace dev "+mainNetworkInterface+" root fq limit 99999 flow_limit 99999", true, true)
+			Cmd("ip link set "+mainNetworkInterface+" txqueuelen 99999", true, true)
 		}
 
 		Cmd("iptables-nft -F", true, true)
diff --git a/vars/vars.go b/vars/vars.go
index 9855ea0..f292e75 100644
--- a/vars/vars.go
+++ b/vars/vars.go
@@ -1,6 +1,6 @@
 package vars
 
 var ConfigFilePath string = ""
-var Version string = "1.14"
+var Version string = "1.15"
 
 var IsRouteAllTrafficThroughTunnelEnabled bool = false