zsh paste issue

Hi, I installed oh-my-zsh and I find it too slow to paste a long string because zsh prints the string by one character every few ms. I have tried every existing methods and none of them works for me.
1. paste the following code in .zshrv

pasteinit() {
OLD_SELF_INSERT=${${(s.:.)widgets[self-insert]}[2,3]}
zle -N self-insert url-quote-magic # I wonder if you'd need `.url-quote-magic`?
}

pastefinish() {
zle -N self-insert $OLD_SELF_INSERT
}
zstyle :bracketed-paste-magic paste-init pasteinit
zstyle :bracketed-paste-magic paste-finish pastefinish

2. Adding : “zstyle ':bracketed-paste-magic' active-widgets '.self-*'.” to .zshrv

3. Adding : “ ZSH_AUTOSUGGEST_BUFFER_MAX_SIZE 20” to .zshrv

Unfortunately they doesn’t work for me. Could you please tell me what I should do to solve the problem? Thanks!

Start by reproducing the slow long-string paste in iSH with the reported zsh configuration snippets in .zshrv. Compare the behavior with the listed bracketed-paste-magic and ZSH_AUTOSUGGEST_BUFFER_MAX_SIZE settings, then determine whether the issue is in iSH or zsh. Done means documenting a confirmed cause and supported resolution, or establishing that no repository change is indicated.

Written by the indexing model from the issue text.