diff --git a/tests/crop_test.py b/tests/crop_test.py
index e3b9e287..350123f9 100644
--- a/tests/crop_test.py
+++ b/tests/crop_test.py
@@ -15,15 +15,14 @@
 
 for m, l in [(False, False), (False, True), (True, False), (True, True)]:
     cfg = picam2.create_video_configuration(main={"size": (1920, 1080), "format": 'XRGB8888', "preserve_ar": m},
-                                            lores={"size": (640, 640), "format": 'XRGB8888', "preserve_ar": l},
+                                            lores={"size": (320, 320), "format": 'XRGB8888', "preserve_ar": l},
                                             display="main")
     picam2.configure(cfg)
     picam2.start(show_preview=True)
 
-    for _ in range(100):
+    for _ in range(50):
         im = picam2.capture_array("lores")
         cv2.imshow("lores", im)
-        cv2.resizeWindow("lores", (640, 640))
         cv2.waitKey(1)
 
     picam2.stop()