It is not only some end-of-year abnormity. It happens throughout the year. I can compare the swap rates only with ICM, and ICM is far better and more stable (both in swaps you get or pay).
To the fanboys: Please stop derailing every thread into a "Darwinex is the best!"-thread. It is literally disgusting. This is a thread about swaps not about rebates, commissions or whatsoever ! (Yes, Darwinex is great. Still ....)