diff --git a/gpyfft/fft.py b/gpyfft/fft.py
index be20b5b..2c886a1 100644
--- a/gpyfft/fft.py
+++ b/gpyfft/fft.py
@@ -25,7 +25,7 @@ def __init__(self, context, queue, in_array, out_array=None, axes = None,
             t_inplace = False
             t_strides_out, t_distance_out, t_batchsize_out, t_shape_out, foo = self.calculate_transform_strides(
                 axes, out_array)
-            if in_array.base_data is out_array.base_data:
+            if in_array.base_data is out_array.base_data and in_array.offset == out_array.offset:
                 t_inplace = True
 
             #assert t_batchsize_out == t_batchsize_in and t_shape == t_shape_out, 'input and output size does not match' #TODO: fails for real-to-complex
@@ -196,13 +196,23 @@ def enqueue_arrays(self, data = None, result = None, forward = True, wait_for_ev
 
         # get buffer for data
         if data.offset != 0:
-            data = data._new_with_changes(data=data.base_data[data.offset:], offset=0)
+            buf = data.base_data
+            if hasattr(buf, 'buf'):
+                # PooledBuffer (probably)
+                buf = buf.buf
+            data = data._new_with_changes(data=buf[data.offset:], offset=0)
+            del buf
         data_buffer = data.base_data
 
         if result is not None:
             # get buffer for result
             if result.offset != 0:
-                result = result._new_with_changes(data=result.base_data[result.offset:], offset=0)
+                buf = result.base_data
+                if hasattr(buf, 'buf'):
+                    # PooledBuffer (probably)
+                    buf = buf.buf
+                result = result._new_with_changes(data=buf[result.offset:], offset=0)
+                del buf
             result_buffer = result.base_data
 
             events = self.plan.enqueue_transform((self.queue,), (data_buffer,), (result_buffer),