Nah, from the sentence it seems Ainz was in a rush, so he just went straight for DPS
Regarding the Cure fight, Ainz even contemplates using Time Stop anyway, since even though Cure has resistance, it doesn't mean the zombies surrounding him do, but in typical fashion, he overthinks
In other words, the Zombies were just Zombies. If he cast [Time Stop], it ought to be effective against the Zombie mass even if it was not effective against Cure Elim himself. That would make them a prison for Cure Elim, who would be sealed inside them. While he felt that it was an effective attack method, there was one thing about it which made him uneasy. Namely, where had the Brightness Dragon Lord's time-stop resistance come from? All of Suzuki Satoru's time-stop resistance came from his gear. However, the Brightness Dragon Lord did not look like the sort who used equipment. Did that mean it had innate resistance to it? It would be fine if that was all. The question was whether said resistance could be applied to others, as though it were a defensive spell. Of course, even if it could cast a spell like that, it would not be wasted if he could force his opponent to play a card. However, it would be troublesome if that ability worked against his trump card as well.
That was why Suzuki Satoru did not cast [Time Stop].
So he was too cautious to use it due to the possible nature of Cure having innate Time Stop resistance and it applying to his zombies. Of course this is a very specific case that only happened because it didn't work on a previous foe who was also a Dragon Lord. Looking at these circumstances, I don't see why Ainz would not use Time Stop a battle with an unknown opponent, like in a VS battle.