Non veni pacem mittere, sed gladium.
Hard to tell. It is quick at about 40 knots.
It looks as if they are running into a moving sea, but they look fast too. 40 knots, or so I have read. They better be fast and have some newfangled armor. I remember watching (on tv) the HMS Antelope, made of aluminium and magnesium burn really well. The USS Turner Joy had an aluminium super structure which didn't stop bullets. The only armor that did was on the gun turrets. It''s hard to outrun bullets and rockets, and inshore work often has both.
It's fast and it is also very LOUD acoustically, which is a problem for a number of missions. It's clearly far too slow and noisey to outrun a supercavitating torpedo. It also burns a vast amount of Navy distillate (fuel) at that speed. I am not a fan of the LCS for a number of reasons. Those above are only part of the problem with the platform.
Look at the RADAR antenna. Doesn't look sped up to me.
They are that fast. The USS Milwaukee was just commissioned and there were news clips of it going like that on Lake Michigan.
It's biggest problem is that it was designed to keep the Navy relevant in a world where having a blue water fleet is irrelevant.