Pool is giving me less then im hashing! help!!!! ANTMINER

[assjiggler]

im runinng an antminer and on the output im getting around 2Gh/s for about 3 hours now but within my pool its telling me im getting 1.3 gh/s what gives?
it only happens when i overclock my miner.  right now im using the frequency 0981  to get 2gh/s  its default is 0781 at 1.6gh/s   but it works when i keep it at 0881 at 1.8 .
im so confused like if its tellin  me im getting 2gh/s why isnt my pool?

also im getting an error when i try to over clock it to 2.2gh/s with 0A81 it just never finds anything or connects

any help would be gladly appreciated thank u

[chadwickx16]

Chances are HW errors are lowering your reported hashrate to the pool.  If you don't know how to calculate HW Errors post a screenshot here.

[assjiggler]

will do ill get em from my other computer

[Markov]

Mist likely Hardware Error are lowering your effective hashrate. Sometimes quicker is not more effective. It probably is better to lower the clock but have less errors and thus a more regular and truer figure on the pool.