diff --git a/config/autoload/tracking.global.php b/config/autoload/tracking.global.php
index 0637301a..1fc05b3b 100644
--- a/config/autoload/tracking.global.php
+++ b/config/autoload/tracking.global.php
@@ -4,33 +4,38 @@ declare(strict_types=1);
 
 use Shlinkio\Shlink\Core\Config\EnvVars;
 
-return [
+return (static function (): array {
+    /** @var string|null $disableTrackingFrom */
+    $disableTrackingFrom = EnvVars::DISABLE_TRACKING_FROM->loadFromEnv();
 
-    'tracking' => [
-        // Tells if IP addresses should be anonymized before persisting, to fulfil data protection regulations
-        // This applies only if IP address tracking is enabled
-        'anonymize_remote_addr' => (bool) EnvVars::ANONYMIZE_REMOTE_ADDR->loadFromEnv(true),
+    return [
 
-        // Tells if visits to not-found URLs should be tracked. The disable_tracking option takes precedence
-        'track_orphan_visits' => (bool) EnvVars::TRACK_ORPHAN_VISITS->loadFromEnv(true),
+        'tracking' => [
+            // Tells if IP addresses should be anonymized before persisting, to fulfil data protection regulations
+            // This applies only if IP address tracking is enabled
+            'anonymize_remote_addr' => (bool) EnvVars::ANONYMIZE_REMOTE_ADDR->loadFromEnv(true),
 
-        // A query param that, if provided, will disable tracking of one particular visit. Always takes precedence
-        'disable_track_param' => EnvVars::DISABLE_TRACK_PARAM->loadFromEnv(),
+            // Tells if visits to not-found URLs should be tracked. The disable_tracking option takes precedence
+            'track_orphan_visits' => (bool) EnvVars::TRACK_ORPHAN_VISITS->loadFromEnv(true),
 
-        // If true, visits will not be tracked at all
-        'disable_tracking' => (bool) EnvVars::DISABLE_TRACKING->loadFromEnv(false),
+            // A query param that, if provided, will disable tracking of one particular visit. Always takes precedence
+            'disable_track_param' => EnvVars::DISABLE_TRACK_PARAM->loadFromEnv(),
 
-        // If true, visits will be tracked, but neither the IP address, nor the location will be resolved
-        'disable_ip_tracking' => (bool) EnvVars::DISABLE_IP_TRACKING->loadFromEnv(false),
+            // If true, visits will not be tracked at all
+            'disable_tracking' => (bool) EnvVars::DISABLE_TRACKING->loadFromEnv(false),
 
-        // If true, the referrer will not be tracked
-        'disable_referrer_tracking' => (bool) EnvVars::DISABLE_REFERRER_TRACKING->loadFromEnv(false),
+            // If true, visits will be tracked, but neither the IP address, nor the location will be resolved
+            'disable_ip_tracking' => (bool) EnvVars::DISABLE_IP_TRACKING->loadFromEnv(false),
 
-        // If true, the user agent will not be tracked
-        'disable_ua_tracking' => (bool) EnvVars::DISABLE_UA_TRACKING->loadFromEnv(false),
+            // If true, the referrer will not be tracked
+            'disable_referrer_tracking' => (bool) EnvVars::DISABLE_REFERRER_TRACKING->loadFromEnv(false),
 
-        // A list of IP addresses, patterns or CIDR blocks from which tracking is disabled by default
-        'disable_tracking_from' => EnvVars::DISABLE_TRACKING_FROM->loadFromEnv(),
-    ],
+            // If true, the user agent will not be tracked
+            'disable_ua_tracking' => (bool) EnvVars::DISABLE_UA_TRACKING->loadFromEnv(false),
 
-];
+            // A list of IP addresses, patterns or CIDR blocks from which tracking is disabled by default
+            'disable_tracking_from' => $disableTrackingFrom === null ? [] : explode(',', $disableTrackingFrom),
+        ],
+
+    ];
+})();
diff --git a/config/roadrunner/.rr.dev.yml b/config/roadrunner/.rr.dev.yml
index 7adf4520..cc0bbf29 100644
--- a/config/roadrunner/.rr.dev.yml
+++ b/config/roadrunner/.rr.dev.yml
@@ -13,11 +13,11 @@ http:
     dir: '../../public'
     forbid: ['.php', '.htaccess']
   pool:
-    num_workers: 16
+    num_workers: 1
 
 jobs:
   pool:
-    num_workers: 16
+    num_workers: 1
   timeout: 300
   consume: ['shlink']
   pipelines: