diff --git a/src/stitching_scanner.py b/src/stitching_scanner.py
index 991ac46..89d90c7 100644
--- a/src/stitching_scanner.py
+++ b/src/stitching_scanner.py
@@ -29,8 +29,8 @@ class StitchConfig:
     settle_time: float = 0.75
     max_scan_time: float = 300.0
     row_overlap: float = 0.15
-    max_mosaic_width: int = 4000
-    max_mosaic_height: int = 4000
+    max_mosaic_width: int = 1000
+    max_mosaic_height: int = 1000
     scan_speed_index: int = 3
     autofocus_every_row: bool = True