Slow (failed) response from Serviio on Synology NAS

Hi,

I have installed the Serviio 1.01 package on a Synology DS411J (ARM). I have had some problems getting the Windows console working consistently but was able to setup my WD TV live streaming box as a renderer. Serviio (Diskstation) appears as a Media Server but the response time when returning the folders is extremely slow. Generally I can navigate to Audio / Image / Video level and a couple of times have been able to reach the next level of the Video folder. However I can't get any further and the WD box gives up and returns: "The last content sources has been removed. Please select a new content source"

I have found Media Browser also to be painfully slow which makes me wonder if there is something with the Synology box itself or a setting I have got wrong.

Serviio appears to be busy building its library but the NAS is only running at 20% CPU usage and I can browse through my media files connecting as a network share without any problems.

I have attached the log file and any pointers would be much appreciated as I really would like to get this working.

Thanks,

Tom

Additional information:

Running top on the NAS (DS411J) shows the Java process running at 217%MEM usage.

free shows:
total used free shared buffers
Mem: 118484 108864 9620 0 1980
Swap: 2097080 187772 1909308
Total: 2215564 296636 1918928