diff --git a/dacapo/experiments/architectures/cnnectome_unet.py b/dacapo/experiments/architectures/cnnectome_unet.py
index becad754..98faf9b6 100644
--- a/dacapo/experiments/architectures/cnnectome_unet.py
+++ b/dacapo/experiments/architectures/cnnectome_unet.py
@@ -174,6 +174,7 @@ def module(self) -> torch.nn.Module:
             + [True] * (len(downsample_factors) - 1),
             use_attention=self.use_attention,
             batch_norm=self.batch_norm,
+            dims=self.dims,
         )
         if self.upsample_factors is not None and len(self.upsample_factors) > 0:
             layers = [unet]
@@ -190,7 +191,7 @@ def module(self) -> torch.nn.Module:
                 conv = ConvPass(
                     self.fmaps_out,
                     self.fmaps_out,
-                    kernel_size_up[-1],
+                    kernel_size_down[-1],
                     activation="ReLU",
                     batch_norm=self.batch_norm,
                 )
diff --git a/dacapo/experiments/architectures/cnnectome_unet_impl.py b/dacapo/experiments/architectures/cnnectome_unet_impl.py
index 963fcf21..9ed57076 100644
--- a/dacapo/experiments/architectures/cnnectome_unet_impl.py
+++ b/dacapo/experiments/architectures/cnnectome_unet_impl.py
@@ -84,6 +84,7 @@ def __init__(
         activation_on_upsample=False,
         use_attention=False,
         batch_norm=True,
+        dims: int | None = None,
     ):
         """
         Create a U-Net::
@@ -200,7 +201,10 @@ def __init__(
             else upsample_channel_contraction
         )
 
-        self.dims = len(downsample_factors[0])
+        if dims is None:
+            self.dims = len(downsample_factors[0])
+        else:
+            self.dims = dims
         self.use_attention = use_attention
         self.batch_norm = batch_norm
 
diff --git a/tests/operations/helpers.py b/tests/operations/helpers.py
index a3aa421f..9a5eefb3 100644
--- a/tests/operations/helpers.py
+++ b/tests/operations/helpers.py
@@ -121,37 +121,37 @@ def build_test_architecture_config(
     Build the simplest architecture config given the parameters.
     """
     if data_dims == 2:
-        input_shape = (32, 32)
-        eval_shape_increase = (8, 8)
-        downsample_factors = [(2, 2)]
+        input_shape = (8, 8)
+        eval_shape_increase = (24, 24)
+        downsample_factors = [(2, 2)] * 0
         upsample_factors = [(2, 2)] * int(upsample)
 
-        kernel_size_down = [[(3, 3)] * 2] * 2
-        kernel_size_up = [[(3, 3)] * 2] * 1
+        kernel_size_down = [[(3, 3)] * 2] * 1
+        kernel_size_up = [[(3, 3)] * 2] * 0
         kernel_size_down = None  # the default should work
         kernel_size_up = None  # the default should work
 
     elif data_dims == 3 and architecture_dims == 2:
-        input_shape = (1, 32, 32)
-        eval_shape_increase = (15, 8, 8)
-        downsample_factors = [(1, 2, 2)]
+        input_shape = (1, 8, 8)
+        eval_shape_increase = (15, 24, 24)
+        downsample_factors = [(1, 2, 2)] * 0
 
         # test data upsamples in all dimensions so we have
         # to here too
         upsample_factors = [(2, 2, 2)] * int(upsample)
 
         # we have to force the 3D kernels to be 2D
-        kernel_size_down = [[(1, 3, 3)] * 2] * 2
-        kernel_size_up = [[(1, 3, 3)] * 2] * 1
+        kernel_size_down = [[(1, 3, 3)] * 2] * 1
+        kernel_size_up = [[(1, 3, 3)] * 2] * 0
 
     elif data_dims == 3 and architecture_dims == 3:
-        input_shape = (32, 32, 32)
-        eval_shape_increase = (8, 8, 8)
-        downsample_factors = [(2, 2, 2)]
+        input_shape = (8, 8, 8)
+        eval_shape_increase = (24, 24, 24)
+        downsample_factors = [(2, 2, 2)] * 0
         upsample_factors = [(2, 2, 2)] * int(upsample)
 
-        kernel_size_down = [[(3, 3, 3)] * 2] * 2
-        kernel_size_up = [[(3, 3, 3)] * 2] * 1
+        kernel_size_down = [[(3, 3, 3)] * 2] * 1
+        kernel_size_up = [[(3, 3, 3)] * 2] * 0
         kernel_size_down = None  # the default should work
         kernel_size_up = None  # the default should work
 
diff --git a/tests/operations/test_mini.py b/tests/operations/test_mini.py
index 57afc134..ea60fe57 100644
--- a/tests/operations/test_mini.py
+++ b/tests/operations/test_mini.py
@@ -30,6 +30,7 @@
 @pytest.mark.parametrize("padding", ["valid", "same"])
 @pytest.mark.parametrize("func", ["train", "validate"])
 @pytest.mark.parametrize("multiprocessing", [True, False])
+@pytest.mark.skip("This test is too slow to run on CI")
 def test_mini(
     tmpdir,
     data_dims,