How to set every display entity's view_range to a number in a world quickly?

Hi all!
I have a problem, I want to set every display entity's view_range to 0.3 in my world, but nothing seesm to work. First I ran this command in a repeat command block /data merge entity @e[type=block_display,sort=arbitrary,limit=1] {view_range:0.3}
Then I tried this execute as @a at @a run data merge entity @e[type=block_display,sort=random,limit=1] {view_range:0.3f}
in a function that runs itself every 2 ticks, still, some of the entities doesn't have the right view range. Why, and how could I make this work?