diff --git a/config.yml b/config.yml
index ec7ed8c4..3cc25714 100644
--- a/config.yml
+++ b/config.yml
@@ -19,7 +19,7 @@ global:
     interval-monitor: 10
     buffer-size: 4096
   telemetry:
-    enabled: true
+    enabled: false
     web-path: "/metrics"
     web-listen: ":9165"
     prometheus-prefix: "dnscollector_exporter"
diff --git a/docs/configuration.md b/docs/configuration.md
index a51d4f9e..16852646 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -64,7 +64,7 @@ The `buffer-size` settings enable to adjust the size of the buffer before discar
 global:
   worker:
     interval-monitor: 10
-    buffer-size: 4096
+    buffer-size: 8192
 ```
 
 ## Custom text format
@@ -182,7 +182,7 @@ Enable and configure telemetry
 ```yaml
 global:
   telemetry:
-    enabled: true
+    enabled: false
     web-path: "/metrics"
     web-listen: ":9165"
     prometheus-prefix: "dnscollector_exporter"
diff --git a/pkgconfig/global.go b/pkgconfig/global.go
index e6df7010..4fcb2c8a 100644
--- a/pkgconfig/global.go
+++ b/pkgconfig/global.go
@@ -22,10 +22,10 @@ type ConfigGlobal struct {
 	PidFile        string `yaml:"pid-file" default:""`
 	Worker         struct {
 		InternalMonitor   int `yaml:"interval-monitor" default:"10"`
-		ChannelBufferSize int `yaml:"buffer-size" default:"4096"`
+		ChannelBufferSize int `yaml:"buffer-size" default:"8192"`
 	} `yaml:"worker"`
 	Telemetry struct {
-		Enabled         bool   `yaml:"enabled" default:"true"`
+		Enabled         bool   `yaml:"enabled" default:"false"`
 		WebPath         string `yaml:"web-path" default:"/metrics"`
 		WebListen       string `yaml:"web-listen" default:":9165"`
 		PromPrefix      string `yaml:"prometheus-prefix" default:"dnscollector_exporter"`