[BUG] Takes too much time to open terminal if the buffer is large

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

If i run tree / in a normal :term buffer i can open it instantly, however if i do it with toggleterm then it takes a lot of time to open the terminal

### Expected Behavior

It takes the same time than :term command

### Steps To Reproduce

Install plugin, run tree / wait for the screen to load a lot of text, then toggleterm and the time it takes to open is very large

### Environment

```Markdown
- OS:
- neovim version:
- Shell: zsh
```

### Anything else?

_No response_