Well setting the bot settings to rush and using silver fish don't work, it's one or the other(unless your using a modified silverfish).
The bot don't play very well at face type decks from my experience or even combo for that matter(grim war, oil rouge etc) Your better off using a zoo, tempo, midrange, or control deck.
It roping has to do with 1 of 3 things either 1: Your computer is slow/using high settings. 2:The main bot AI seems to rope alot(I stick to silverfish with tweaks to avoid this). 3:The current issue with the newest patch/bot update.
In the end the bot is not as smart as you maybe regardless of settings/deck It most likely wont get you past rank8.
I hope this answered your questions good luck.