How big are the strings?
Eli: some step output large size string that is about 165kB, and the size of string from all steps is 614kB;
Why are you writing to a value property instead of the terminal?
Eli: as you can see in below figure, I also need set the scrollposistion;
How do you measure the speed?
Eli: in parallel with the for loop, I have another while loop to record the execution time till the for loop finished;
Can you show us some simplified code that shows the problem?
Eli: refer below pic.
thx!