Maximum attack speed is a LIE!

I recently use the practice tool to test difference items and suddenly got curious if the maximum attack speed is really 2.5? (I don't know why but it just came to me out of nowhere)

So by definition attack speed of 2.5 means 2.5 attacks per second. I maxed out attack speed with 6 attack speed items then counted how many attacks will I get in 10 seconds with it (which should be 25 attacks in 10 seconds). The result was surprising, I repeated many times just incase of some measurment errors but it is always 23 attacks in 10 seconds. Then I thought maybe the measuring time was too short so that measuring errors could be large. Then I counted attacks in 40 seconds, and it is always 94 attacks (which is supposed to be 100 if the attack speed is truely 2.5). So maximum attack speed does not actually go up to 2.5 attacks per second but is rather around 2.35!

I've also then tested out attack speed of 1 and it is very accurate to be 1 attack per second. I did the test on both caitlyn and lucian just in case it was influenced by which champion was used, both got the same result.

Anyone interested in this matter, can you also try this out and share/confirm in the comment? This might not be a huge deviation but it is rather unfair and dishonest, and as a player who some times likes to play certain champions with max attack speed, this is not a pleasent thing.