I have to agree that it should be lowered or even better if you can remove the fee. 1% is indeed seems a low number but it can be big amount for big withdrawals. Maybe this one that's make high rollers are not interested to play on your site.
1% fee on cashout makes it pretty much a no go zone for any whale,hope you do realise it
I haven't seen many (if any) legit casinos that use this sort of a fee
imagine if I deposit 2 btc,gamble and win 0.02 btc and withdraw,I will have to pay more than I won in fees
not that I see anyone depositing 2 btc here in the foreseable future anyways,but still