Frame drop (or something like that)

Just watch the video and resolve this as quickly as possible. It gets annoying as it happens several times in a row.
I'm not sure if this is a bug, but as there is no other category to select... Btw

https://drive.google.com/file/d/115rwDEpkvAKaKSyvVnuh4R6-NB8byamZ/view?usp=drivesdk