One thing I would definitely recommend is to at least disable "realtime" caching within the context of the layer thumbnails. We really don't need to update thumbnails until after an operation is complete. (note for Krzysztof if he can help)
One thing I would definitely recommend is to at least disable "realtime" caching within the context of the layer thumbnails. We really don't need to update thumbnails until after an operation is complete. (note for Krzysztof if he can help)