render host is not responding

hi there, i work on a scene with about 13million polygons. i did the tests with distr. rendering with 2 computers. since 2 hours one render host doesn`t render any more, i get the message: “warning: render host unknown(ip adress) is not responding”
all paths are unc, checked it in asset tracking.
can it be the the ram-usage is too high for the pc that doen`t render(4gig ram)? the other one has 8gig ram.
in the task manager i saw that the ram usage of the 2 3dsmax.exe processes is about 8 gig.

Hi, the same problem here. My previous scene is rendering without problems. After I had loaded a heigh resolution modell in the same scene, the DR rendering is not working properly. The message in the log window is: " Server 192.xxx.xxx.xxx.xx Scene loaded; starting render." and behind “warning: Render host xxx1234(192.xxx.xxx.xxx.xx)is not responding”.
There is no render bucket from the slave in the VFB. I´m assuming that there is a timeout or something like this. Any hints?
Thanks + Regards