mining help and speed

[mamadmankan]

hey

so right now im having problems with mining ltc . the kh/s is sometimes up and sometimes down !??!? the card that i have needs to be around 800khs and how do i know if the pool is giving me 800kh/s

its really confusing because when i set up my workers and run the cgminer and look at the speeds its around 400kh/s but then when i update my workers it shows 50kh/s !?!?

any help or what im doing wrong ?!?!

and what temperature should i keep the cards at !??! right now they jump from 69 - 74 or 75

and the forth thing , what is threads ?!? i dont understand to use more threads or not because it says recommended 2 but you can go from 5 - 10

let me know the details guys please

[mamadmankan]

any help please on this topic please i really would appreciate it