Some serious lag last night /video

Was playing a hellbugs swarm last night and at stage 8 the enemies didn’t spawn for over 90 seconds. Then, when they finally did spawn it was just the visual. Some could take damage others could not and were invisible at times. Additionally, the character started moving on its own. Tried to run and it stuttered. Experiences like this happen quite often on PS4 NA. Both in swarms/sieges and arkfalls. All I can think about is that statement that was made of stability being in a good place.
https://youtu.be/aG5TUxn5F3A

Yeah, that's a huge bag of YIKES... stability in a good place, what? XD

I’ve experienced this before in another game and the lag spikes were caused by the dev team making changes in game while people were playing. It would lag while they were doing adjustments then when they were finished the lag would go away. Can’t say this is the issue here but is the only explanation I can find that makes sense given their official statement on stability. It could also just be something completely unknown and unrelated. It needs addressed either way. I’d much rather them take the game offline to make adjustments than do it while we are playing leaving us to think the game has poor stability.