Crashes on RT87U

[plasmoctopus]

Hi!

I'm currently running 380.58_0 of WRT-Merlin on the Asus RT87U. Everything is running fine except that the router crashes every ~30 days. The LEDs are still blinking, but there is no Internet connection from LAN/Wifi and I cannot ping my ip from the outside.
When this happens I have to be home and disconnect the router from the power and power it back on to restart it. This is extremely annoying as I am running a small webserver & cloud from home.
Where should I start looking for the problem? Is this a known issue? Are there any logs I should check?

Thank you!

 

[L&LD]

Known issue (memory leak). Use search or just go back to the most stable previous firmware for now.

 

[pete y testing]

Where should I start looking for the problem? Is this a known issue? Are there any logs I should check?

see above

if you can just auto schedule a reboot of the 87u once a week

 

[plasmoctopus]

Thank you for your answers!
Auto reboot would be a good alternative.
Does anybody know which is the latest stable firmware for this router? The website says that 380.58 is the current stable one (I guess this is wrong then).

 

[plasmoctopus]

and are there any special precautions for downgrading the version?