Massive 5+5 cheating- can you improve this?

I found that in 5+5 there is so many cheaters - is current algorithm detect this kind of unfair play since when I play other speeds there is not problem (probably they like such times).

What kind of cheating I found (I wrote own cheat detection tools in Python):
- playing chess opening books (short times o 10-20 moves and after opening stupid play - unable to mate with queen without computer use)
- using Stockfish when someone is loosing (after stupid play they switch into perfect mode)
- play middle like 2000 with 1000 (but puzzle ranking is about 1000 - some games they play with AI and some without - it is very visible)
- play like 2700 (no error or inaccuracy or 1-2 on 50 moves) with ranking 1000 - it is impossible

I think it is not smurfing since in my tool is quit visible that some games are artificial.

As I said not such problem in 3+2 or 15+10 or more rare.

Hi,

Please report suspicious players

https://support.chess.com/article/209-how-do-i-report-someone

Thanks as discussing this isn't for the general forums.