very slow with long files

[g-i-o-r-g-i-o]

Preservim is really slow with long files that contain numbers as the first character

For example I have a file made of 5000 lines, and it takes about 2 seconds to enter insert mode.

This happens on windows and on linux, with the latest vim.

I can't post the file for copyright reasons :-(

1. zzz
2. zzz
3. zzz
4. zzz
5. zzz
6. zzz
7. zzz
8. zzz
9. zzz
10. zzz
11. zzz
12. zzz
13. zzz
14. zzz
15. zzz
16. zzz
17. zzz
18. zzz
19. zzz
20. zzz
21. zzz
22. zzz
23. zzz
24. zzz
25. zzz
26. zzz
27. zzz
28. zzz
29. zzz
30. zzz
31. zzz
32. zzz
33. zzz
34. zzz
35. zzz
36. zzz
37. zzz
38. zzz
39. zzz
40. zzz
41. zzz
42. zzz
43. zzz

[meonkeys]

Thank you for reporting. I had the same issue. Disabling folding fixed poor performance with large Markdown files for me.

See also: https://fosstodon.org/@meonkeys/109604133237227739