How to control Memory consumption is sys.txt file

Hi

I have a bit of a problem on my Chinese double din where IGO Primo v2.0 will just suddenly cause my device to reboot for no apparent reason. I could be just driving along following the prescribed route and then bam it just reboots, sometimes I get an out of memory error but normally it just suddenly reboots.

I think this has to do with the device running out of memory, this is my device [Please Register or Login to download file]

I have read some posts that suggest you can control/limit the amount of memory IGO consumes by making a modification to the sys.txt file. Can someone tell me exactly what text i need to add to the file to achieve this.

Thanks

Most memory problems occur because of too much content trying to load when the program starts. Suggestions are 1. Delete all dem files. 2. Delete all building files. 3. Reduce the geographical area of speedcams. 4. Reduce the number of maps/pois.