Lagging

I upload code to my custom board and it works fine until I open custom container and it starts lagging (with others custom containers in that screen does not lagging) in other screens also the same problem. I've tried to comment code in this custom container but nothing helps.. Attach video :

https://www.dropbox.com/scl/fi/3p2t9rqdc2mjpthl76ynp/Video-2023-08-07-07-41-03.mov?rlkey=7eeou4uvend1m902ei0k7ch1s&dl=0

What can cause this problem?