Forex Time it takes for larger orders to be filled

Hello there again to the FF community.
I have recently got a question I was hoping somebody here might be able to help me with.

When it comes to the amount of time it takes for an order in the spot FX market to be filled, that is the ECN-DMA realm, am I correct in assuming it will take longer for larger orders to be filled?

I was thinking about this and because FX orders being filled is a matter of liquidity, if I wanted to get say an order of 1 lot filled, am I right in saying that for a 50 lot order it will take longer to be executed as more liquidity becomes a factor in the amount of time it takes to match a buyer/seller to my order?

What kind of wait times can be expected when having a larger order size filled? By this I mean how long is a reasonable expectation to be filled on a 50 lot order, or perhaps even a 100 lot order?

I hope somebody here can understand the question I am asking and provide me with some insights on this, regarding the amount of time it can take to fill larger orders in the real market, and if I am indeed correct in my thinking that smaller orders are filled quicker than larger orders.

Thank you.

Source.