CIFS High Loading at OES2018SP2

Our environment was cluster three node and two resouce mount to different node ,production line was windows xp machine, this machine no installed oes client and novell client  that used cifs service mount (like  picture) ,

Now OES Server one or two weekly  cifs service will crash, has anyone encountered a similar situation?

 

production line has ten machines all used windows xp, we can't change  production line os.

 

 

Thanks.