over 90% of CPU when heartstone is open.

Mac Technical Support
recent updates kills my computer. i can not even play the game.
Same problem.
Nothing I see in this post solve the issue. Tried:
- deleting the options.txt
- adding the lines to options.txt
- also tried to close the Battle.net app with the preferences suggested

CPU keeps ramping to 90% and kills my macbook pro battery

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