diff --git a/index/main.py b/index/main.py
index df4575a..5ae3343 100644
--- a/index/main.py
+++ b/index/main.py
@@ -74,7 +74,7 @@ class SparseVector(BaseModel):
     values: list[float]
 
 
-CHUNK_SIZE = 256
+CHUNK_SIZE = 384
 OVERLAP_SIZE = 128
 SPARSE_MODEL_NAME = "Qdrant/bm25"
 FASTEMBED_CACHE_PATH = "/models/fastembed"
diff --git a/search/main.py b/search/main.py
index a55a466..7f9facb 100644
--- a/search/main.py
+++ b/search/main.py
@@ -161,10 +161,10 @@ async def lifespan(app: FastAPI):
 
 app = FastAPI(title="Search Service", version="0.1.0", lifespan=lifespan)
 
-DENSE_PREFETCH_K = 80
-SPARSE_PREFETCH_K = 200
-RETRIEVE_K = 150
-RERANK_LIMIT = 10
+DENSE_PREFETCH_K = 50
+SPARSE_PREFETCH_K = 150
+RETRIEVE_K = 100
+RERANK_LIMIT = 15
 
 
 async def embed_dense(client: httpx.AsyncClient, text: str) -> list[float]: