No? At least not in volume 12, or in the LN as far as I know. Rimuru concluded that Chloe can stop time, and Guy can either do the same or he can move even during stopped time. There are other stuff like them looking like stop-motion images in Rimuru's perspective but I forgot and am unsure what's the cause of that, whether it was them being too fast or the time-stop not being continuous.
"«—!! One possibility has emerged. Assuming that the individual ‘Chloe Aubert’ can use the power of the Unique Skill ‘Time Travel,’ which has been integrated into Ultimate Skill ‘Yog-Sothoth,’ to control time, ‘Analyze and Assess’ will always fail, since it is impossible to observe phenomena that are not on the same time axis.»
Ah, is that so…
The true nature of the power that Chloe acquired was the ability to stop time, or something to that effect."
Raphael says that Analyze and Assess can't work because those two are not on the "same time axis", and Rimuru thinks that they're stopping time. Unless their power is that they can only stop time for a second, I wouldn't understand how Rimuru and others are able to see them move.
"The bright glint of a moving blade.
I had no clue where he brought it out from, but Guy had a longsword in his hand and was currently swinging down at Chloe’s neck with it.
Guy’s swift swordsmanship was worthy of being called godlike. My perceptual speed, which stretched things out a million times more than normal, told me that I was already too late even if I moved immediately.
Not only that, Leon and Luminas faced the same dilemma. Everyone had an air of despair and tried to turn away from the horror that would transpire.
But, in the next moment, a sharp and clear clang echoed.
«—?!»
The small Chloe suddenly grew up and blocked Guy’s attack; I didn’t know when she had pulled a sword out, either. Her clothes had also changed to that of a Hero. Chloe’s usage of her Holy Spirit Armor was fairly natural, and she seemed to have already mastered it."
"I was definitely taken aback, but I glanced around to gauge everyone else’s reactions. Leon and Luminas appeared just as pale as I did. However, instead of being angered by Guy’s actions, it felt as if they were desperate to understand what had taken place right in front of their eyes.
The others were out of the question. They evidently didn’t even notice the movement of the swords, so they couldn’t have possibly recognized the dire situation."
and
"They crossed swords several times. It felt like I was watching a stop motion animation; the continuity to the flow of their sword exchanges was nonexistent—or so it seemed. This was bad. I couldn’t fully follow everything, so this was all based on conjecture."
I don't believe that they're too fast because Raphael can't seem to understand them and says that they're not in the same time axis, whatever that means. Not to mention Rimuru states:
"This was because I didn’t understand what had just happened. I couldn’t track their movements even with my perception cranked up by a factor of one million.
It became abundantly clear that this phenomenon wasn’t due to some kind of super speed. There was no turbulence in the surrounding air, nor were there any abnormalities in the laws of physics.
Magic, or something else, perhaps. It’s times like these that my trustworthy partner comes into play. Now, I request an explanation, Raphael-san!
«Report. Unknown. Failed to ‘Analyze and Assess’ the phenomenon performed by individual ‘Chloe Aubert.’»"
