TOS - That Which Survives - Does anyone else think that both Kirk and Spock were a bit grocuchy in this episode?

I just watched this episode the other night and Kirk seems to be annoyed with Sulu, then Spock is like 990.07 light years, not 1000 please be more accurate.

It felt off for those characters. But maybe it was just late when I watched itS. What do you think?