add to Hearthranger.ini this:


[BOT]
AlwaysSyncBoard=true
MaxMemoryUsage=4000

[VICPU]
CPUNumber=4 (your computer cpu number)
ThreadPerCPU=8 (your computer thead num)
CriticalWaitTime=3000
CalcMaxDepth=15

this will speed it up for calculation and can help it

Default config is good enough for most aggro deck , you can also build deck with the bot itself from a list that you can find by clicking the top left Cards icon while you sit in My Collection in game and choose from there a deck or build your own or use one of the custom config ones.

Secret Mage can work with the default config if i remember.

Deck like Miracle Rogue or weird combos is something you usually avoid unless you have a config for it.

Depending on the deck you plan to use for custom config you can find different configs for certain deck around the forum like Demon Hunter or Face Hunter.
Most of the builds are currently outdated a bit some even broken after cards being nerfed but it can give you a solid start to.adjust it to your like and find a way to hit a decent wr (:

http://www.hearthranger....Tempo-Demon-Hunter.aspx
heres an example for a Wild Demon Hunter but the Weapon Warglaive of Azzinoth got nerfed so you need find a replacement this hit around 55+ wr in wild (last time i used it was last week)

You can also build your own but i cannot help for that part as iam not a coder.