As far as I know, it isn't possible to "Turn Off" auto-updates in Steam and the only way to prevent any updates of your games is putting Steam into "Offline" mode
Try it - http://www.fm-base.co.uk/forum/share-download-fm-18-tactics/371469-stormcaller.html
For me Stormcaller tactics series are the best tactics with 4 defenders in FM18
I use the Waste Time tactic only when I lead by 2 goals or sometimes I use it when I lead by 1 goal and it doesn't matter for me when it happens at the begging of the match or at the end :)
Greetings to everyone! :)
Here's my 1st season with Southampton.
I won the league, FA Cup and Capital One Cup! :)
This tactic is just incredible I've never seen anything similar before!