I've been lifting a similar period of time (although only 3 days a week, with some breaks during COVID etc.) and would concur. I have improved intra-workout endurance when taking creatine, i.e. I can do more reps/the last reps feel easier.

Anecdotally I do also notice a cognitive impact when taking it, e.g. I seem to have improved concentration. Or more that when I have stopped taking it I have decreased concentration. Anecdata 1 of 1.