MegaKabuterimon destroying Vademon's dimension[]
Feat[]
Context[]
In Digimon Adventure episode 24, Vademon had sustained a pocket dimension which was a digital universe and contained suns, planets and even asteroid belts with it's own space-time. And later the said universe was destroyed by MegaKabuterimon, who was another Perfect level.
Calc[]
Timeframe: MegaKabuterimon used the attack at 0:17 and the entire dimension is already engulfed in white light while he is coming out at 0:27, so 10 seconds.
Distance: 94,000,000,000 light years due to above context.
296646605300110660c
Vademon destroying stars[]
Feat[]
| “ | While Koushiro swam his way through the zero gravity air-space, Vadermon chased after him with the zigzag motions of a UFO, shooting at him at every chance.
Pew pew pew pew pew… The rings of light were more powerful than they looked. The stars that took on a direct hit from them burst into smithereens. |
„ |
| ~ Digimon Adventure novel |
Context[]
In Digimon Adventure novel Vademon's Abduction Beam attack had quickly destroyed stars in previously mentioned dimension. He did the same in anime, however result of those beams weren't shown on screen. So we're gonna estimate it by order of events. It was the beams that were fired when Koushiro and Babumon first entered that dimension, that time Tentomon was still a Babumon and stars were described to be destroyed before he evolved.
Calc[]
Timeframe: Vademon fired the beam at 0:02 and Babumon evolved at 0:07, as said in novel, at this point stars were already destroyed. So 5 seconds.
Distance: Taking 4.24 light years at minimum, which is the distance of closest star to Earth, due to an Earth like planet being closest to the door of that dimension.

26761310.77601c
Can be higher if taken distance of other stars into account.
All the results are Massively FTL+.
And Perfect level Digimon are capable of constantly reacting to said attacks and even countering the higher end calculated one.