I think there's no option with that, we can't adjust the fee when we are going to cash out our fund. We all know that Bitcoin transaction fee is so high especially when the market pumps up also the transaction fee will increase. I think the best option here is to convert your bitcoin to altcoins like Dogecoin or Ethereum those coins are having the lowest cost in fees. Because for me I really matter how the speed of the transactions going through.
Yes I am agreed with you. Really this is good Idea to reduce cash out fees from this exchange. I have also try this way to reduce the transection fee but feel some issue about the exchange rate. the withdrawal fee is = 20000 satoshi or below. But if you exchange to eth from btc you will not get the right amount in usd. please see this screenshot to easily understand.
The rate during typing on windice
And this is the rate on binance at the same time
Here I tried to exchange 0.010 btc to eth on windice and binance. In windice for 0.010 btc I will get 0.32 eth. but on binance I will get 0.32 eth by 0.00948 btc. So the different on both exchange about 50,000 satoshi. But the withdrawal fee is upto 20,000 satoshi.
Then How you will reduce your fee??
you don't really expect a gambling site to have the same rates as the exchanges that specialize in trading?
dice sites specialize in gambling , with an additional feature of being able to exchange your coins to a different one without athe need to send them elsewhere
the site charges 3-5% fee on top of the average exchange rate , you can check the rates
if you swap one bitcoin , it is not very wise to do so at any gambling site
but if you exchange 100-200k satoshi , you are way better off changing it on the spot - you save on tx fees and time