@PASHKA there is no need to be rude. I find that Enpass is an excellent app but here are some improvements to be made. It is good to give feedback and criticism, but no reason to resort to the language you are using.
I have 900 items here and while it is far from as slow as OP describes Enpass is very noticeably slower than my previous pwd manager 1Password. I do have multiple entries with file attachments if that makes a difference.