It's a known problem, https://us.forums.blizzard.com/en/wo...10-2019/385483

With the workaround, manually selecting GPU in WOW setting worked when launching normally without Innerspace.
But when launched through Innerspace, it's still using the Intel GPU even though in the WOW settings it's manually set to Nvidia. HWMonitor showing Intel GPU at 99% and Nvidia at 0%.

Is there a way to manually set it Nvidia GPU in ISBoxer/Innerspace ? Thanks.