Interesting. I didn't notice any lag issues, but not really sure what I'm doing. I will say the tutorial, while nice to have some backstory, is far too long. Plus, when I got to the first time I could interact, I thought I was supposed to match the buttons and it was incorrect. I do appreciate I could turn off the background music. It wasn't a bad song choice, but in the long tutorial, it was a tad bit overpowering.
(Also, just as an aside for you. When introducing the Command Console after first showing the OS, your "voice-over" text has "REF_B" but the part name on the OS says "REE_B".)