Queue CPU Usage .

Hi , I am a newby in Mikrotik , i am playing with queues , and in the mikrotik i make that queues .

/queue simple add dst-address=110.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=111.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=112.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=113.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=114.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=115.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=116.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=117.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=118.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=119.0.0.0/8 max-limit=256000/256000
/queue simple add dst-address=120.0.0.0/8 max-limit=256000/256000

But the mikrotik is rebooting after some time , I think that is a lot of CPU Usage .

Somebody know what can i Do ?

My Server Configuration Was a Xeon Quad Core Processor with 4 GB RAM .
Used to filter a DataCenter .

Monitoring with Torch and Firewall is perfectly working , the problem seems to be just with the Queues .