Help render uc 5% work and ram 98%

[josadadil]

Guten tag lieben freundeeee,,,,,,

goood morninng friends i have big problem please someone can help me

i have worstation

cpu 3770k 3.5 ghz

ram ddr3 2333 mhz 32 gigabyte

graphic card GTX 650 ddr5 1Go

scene in 3ds max have 118 milion polygonnn http://www.evermotion.org/vbulletin/...ons/icon11.gif

i know its so much but its work with me normal

my problem is when i make render vray take all ram 99% but cpu dont work http://www.evermotion.org/vbulletin/...cons/icon9.gif

render take more than 10 hours http://www.evermotion.org/vbulletin/...cons/icon9.gif

 

i have this settings :

adaptive dmc

in color mapping . linear

vray sun and sky

irradiance map : vry low with HSph 50/30

Light cache : 800 , sample size 3 , scale;screen and 8 in numbre of passes

in system i add : max trees :80, Min. leaf :0,0 level ceof : 2.0 and dynamic memory limit i add 22000 and in render region division X32Y32 AND ALL OTHER IS DEFAULT

 

when i make render before (all is great) and when i unhide all objects i have this problems

 

in task manager i have ram 31.5 go used (98 %) and cpu 0-5 % only and in all steps of render