Disregarding the ins and out of fixed v variable for a minute, the 5.69% 3 year fixed is not the best in the market.
AIB have a 5.2% fixed rate, depending on how much you have outstanding you could recoup the cost of the legal fees involved in switching and more by going for the lower rate.
If you had asked between a tracker and fixed then there would only be one winner for me but in relation to variable rates, nobody knows how much of the rate cuts will be passed on by the banks. At least on the fixed you know where you are for the next 3 years but as you probably know there may be a penalty for early redemption, you may not be able to pay back lump sums or overpay the mortgage.
As ever the advice is don't try and time the market, weigh up the pros and cons of each for your personal situation and come to a conclusion from there.