diff --git a/lib/keycloak.js b/lib/keycloak.js
index 22dc1da..e032e3e 100644
--- a/lib/keycloak.js
+++ b/lib/keycloak.js
@@ -28,7 +28,31 @@ const configEnvVars = {
     "name": "sessionCount",
     "type": "int",
     "mandatory": false,
-    "default": 100
+    "default": 1000
+  },
+  "VU_COUNT": {
+    "name": "vuCount",
+    "type": "int",
+    "mandatory": false,
+    "default": 10
+  },
+  "TEST_DURATION": {
+    "name": "testDuration",
+    "type": "string",
+    "mandatory": false,
+    "default": "5m"
+  },
+  "RAMPUP_DURATION": {
+    "name": "rampupDuration",
+    "type": "string",
+    "mandatory": false,
+    "default": "30s"
+  },
+  "SETUP_TIMEOUT": {
+    "name": "setupTimeout",
+    "type": "string",
+    "mandatory": false,
+    "default": "1h"
   },
 };
 
@@ -54,7 +78,7 @@ export function getTestConfig() {
       if (params.mandatory) {
         throw new Error(`Please set the ${env} environment variable`);
       }
-      if (params.default) {
+      if (params.default != null) {
         value = params.default;
       }
     }
diff --git a/login.js b/login.js
index 8d79e3a..4ca972c 100644
--- a/login.js
+++ b/login.js
@@ -2,16 +2,17 @@ import { check } from 'k6';
 import { pickRealm, pickClient, pickUser, getTestConfig, wrapWithErrorCounting, Keycloak } from "./lib/keycloak.js";
 import { randomSeed } from 'k6';
 
+const config = getTestConfig();
+
 export let options = {
   stages: [
-    { duration: "20s", target: 5 },
-    { duration: "2m", target: 300 }
+    { duration: config.rampupDuration, target: config.vuCount },
+    { duration: config.testDuration, target: config.vuCount },
+    { duration: config.rampupDuration, target: 0 },
   ],
   noVUConnectionReuse: true,
 };
 
-const config = getTestConfig();
-
 randomSeed(__VU);
 const realm = pickRealm(config.realmCount);
 let keycloak = new Keycloak(config.keycloakURL, { offlineTokens: config.offlineTokens });
diff --git a/refresh-token.js b/refresh-token.js
index e681cf2..6a29b02 100644
--- a/refresh-token.js
+++ b/refresh-token.js
@@ -2,15 +2,16 @@ import { check, sleep } from 'k6';
 import { wrapWithErrorCounting, shuffleArray, getTestConfig, setupOpenSessions, Keycloak } from "./lib/keycloak.js";
 import { randomSeed } from 'k6';
 
+const config = getTestConfig();
+
 export let options = {
   stages: [
-    { duration: "20s", target: 5 },
-    { duration: "2m", target: 300 }
+    { duration: config.rampupDuration, target: config.vuCount },
+    { duration: config.testDuration, target: config.vuCount },
+    { duration: config.rampupDuration, target: 0 },
   ],
 };
 
-const config = getTestConfig();
-
 randomSeed(__VU);
 let keycloak = new Keycloak(config.keycloakURL, { offlineTokens: config.offlineTokens });
 
diff --git a/tokeninfo.js b/tokeninfo.js
index 8a6b9bf..1e357a3 100644
--- a/tokeninfo.js
+++ b/tokeninfo.js
@@ -2,15 +2,16 @@ import { check } from 'k6';
 import { wrapWithErrorCounting, Keycloak, getTestConfig, setupOpenSessions, pickRandom } from "./lib/keycloak.js";
 import { randomSeed } from 'k6';
 
+const config = getTestConfig();
+
 export let options = {
   stages: [
-    { duration: "20s", target: 5 },
-    { duration: "2m", target: 300 }
+    { duration: config.rampupDuration, target: config.vuCount },
+    { duration: config.testDuration, target: config.vuCount },
+    { duration: config.rampupDuration, target: 0 },
   ],
 };
 
-const config = getTestConfig();
-
 randomSeed(__VU);
 let keycloak = new Keycloak(config.keycloakURL, { offlineTokens: config.offlineTokens });
 
diff --git a/userinfo.js b/userinfo.js
index 9928c79..b14d2fd 100644
--- a/userinfo.js
+++ b/userinfo.js
@@ -2,15 +2,17 @@ import { check } from 'k6';
 import { wrapWithErrorCounting, Keycloak, getTestConfig, setupOpenSessions, pickRandom } from "./lib/keycloak.js";
 import { randomSeed } from 'k6';
 
+const config = getTestConfig();
+
 export let options = {
   stages: [
-    { duration: "20s", target: 5 },
-    { duration: "2m", target: 300 }
+    { duration: config.rampupDuration, target: config.vuCount },
+    { duration: config.testDuration, target: config.vuCount },
+    { duration: config.rampupDuration, target: 0 },
   ],
+  setupTimeout: config.setupTimeout,
 };
 
-const config = getTestConfig();
-
 randomSeed(__VU);
 let keycloak = new Keycloak(config.keycloakURL, { offlineTokens: config.offlineTokens });