diff --git a/src/utils/agents/persona_generator.py b/src/utils/agents/persona_generator.py
index ab97583..3729134 100644
--- a/src/utils/agents/persona_generator.py
+++ b/src/utils/agents/persona_generator.py
@@ -218,7 +218,7 @@ class PersonaGenerator(Agent):
                 self.username = persona.get("username", None)
                 if not self.username:
                     raise ValueError("LLM did not generate a username")
-                self.username = re.sub(r'\s+', '.', g)
+                self.username = re.sub(r'\s+', '.', self.username)
                 user_dir = os.path.join(defines.user_dir, persona["username"])
                 while os.path.exists(user_dir):
                     match = re.match(r"^(.*?)(\d*)$", persona["username"])
diff --git a/src/utils/image_model_cache.py b/src/utils/image_model_cache.py
index 4141661..cca6317 100644
--- a/src/utils/image_model_cache.py
+++ b/src/utils/image_model_cache.py
@@ -7,8 +7,8 @@ from typing import Any
 import torch # type: ignore
 from diffusers import StableDiffusionPipeline, FluxPipeline # type: ignore
 
-class ImageModelCache:
-    def __init__(self, timeout_seconds: float = 60 * 15):
+class ImageModelCache: # Stay loaded for 3 hours
+    def __init__(self, timeout_seconds: float = 3 * 60 * 60):
         self._pipe = None
         self._model_name = None
         self._device = None
diff --git a/src/utils/profile_image.py b/src/utils/profile_image.py
index aecf6bf..b33acdf 100644
--- a/src/utils/profile_image.py
+++ b/src/utils/profile_image.py
@@ -48,7 +48,7 @@ class ImageRequest(BaseModel):
     guidance_scale: float = 7.5
 
 # Global model cache instance
-model_cache = ImageModelCache(timeout_seconds=60 * 15)  # 15 minutes
+model_cache = ImageModelCache()
 
 def flux_worker(pipe: Any, params: ImageRequest, status_queue: queue.Queue, task_id: str):
     """Background worker for Flux image generation"""