diff --git a/cooperative_cuisine/configs/environment_config.yaml b/cooperative_cuisine/configs/environment_config.yaml
index a9bc87c672a0dd6570fbb368f0fff4aef0057cc2..9a71c3766af6744364c63721649fbf2c6c00639e 100644
--- a/cooperative_cuisine/configs/environment_config.yaml
+++ b/cooperative_cuisine/configs/environment_config.yaml
@@ -5,7 +5,7 @@ plates:
   # range of seconds until the dirty plate arrives.
 
 game:
-  time_limit_seconds: 1
+  time_limit_seconds: 300
   undo_dispenser_pickup: true
   validate_recipes: false
 
@@ -17,7 +17,6 @@ meals:
     - TomatoSoup
     - OnionSoup
     - Salad
-    - Burger
 
 layout_chars:
   _: Free
diff --git a/cooperative_cuisine/configs/study/level1/level1_config.yaml b/cooperative_cuisine/configs/study/level1/level1_config.yaml
index 9d2c2822c386f107e907484c863f775f6f43b9e7..a11af103d6cf59d5394aec44f3a0a5dfb1beb9e9 100644
--- a/cooperative_cuisine/configs/study/level1/level1_config.yaml
+++ b/cooperative_cuisine/configs/study/level1/level1_config.yaml
@@ -11,7 +11,7 @@ game:
   validate_recipes: true
 
 meals:
-  all: true
+  all: false
   # if all: false -> only orders for these meals are generated
   # TODO: what if this list is empty?
   list:
diff --git a/cooperative_cuisine/configs/study/level2/level2_config.yaml b/cooperative_cuisine/configs/study/level2/level2_config.yaml
index 6d5c16fd044ed82cf2ea387f2102a2fdf4f9e940..585204df927d247f276f7a3277e35e05f44a7966 100644
--- a/cooperative_cuisine/configs/study/level2/level2_config.yaml
+++ b/cooperative_cuisine/configs/study/level2/level2_config.yaml
@@ -5,8 +5,9 @@ plates:
   # range of seconds until the dirty plate arrives.
 
 game:
-  time_limit_seconds: 300
+  time_limit_seconds: 2
   undo_dispenser_pickup: true
+  validate_recipes: false
 
 
 meals: