Is there a DVL bug?

hi

my biggest problem is the display of a series of data from a table used as the data source of a dvl (a custom dvl)
it’s jerky and it takes forever
I had another difficulty it was the click but that’s solved

here are the blocks i use

i found this post

these blocks are complete lists and yet the loading of about twenty lines takes a lot of time
moreover in a second block group I also use a json block and it’s not terrible on my phone on the other hand on my pc it’s ok

it is about recursive function i am unable to implement it in my case