LiteCoin Mining (7870 x 2) GuiMiner v.02

[WastedLTC]

Got a machine up and running with 2 7870's and soon to add two more but wanted to get these running smooth before adding 2 more cards.  Running GuiMiner v.02 for Litecoin mining.

Thread Concurrency = 15508
Vectors = 1
GPU Threads = 1
Worksize = 256
Intensity = 20   
Use Stratum = No

I've tried anywhere from 12-20 on intensity and it will change the hashrate but not the number of stales.   I get around 300-350 khash/s per card but a stale rate of 30%-40%.   Currently using burnside's LTC pool (http://ltc.kattare.com).

Any suggestions to get the stale rate down?

Appreciate the help!

[pr0d1gy]

Im new to the whole mining thing, but i know some servers have stratum options where it may slow down your speed, but improve stale rate so its lower.  check if there is a url/port for stratum then "Use Stratum = Yes".