Bumping this topic.
I recently upgraded my Macbook Pro 15" (Late 2016) with 16GB RAM to Big Sur.
When I open Logic Pro X with no tracks etc, it hovers around 25% CPU.
But if simply add Helix Native (3.10, with any patch), CPU goes to 125% and stays there. I get frequent audio dropouts. Helix Native becomes quite unresponsive, it can take 1-5 seconds from I click on anything in the interface, for it to respond. Everything "works" (I can play etc) but my machine becomes very sluggish.
I replaced Helix Native on the track with an instance of Amplitube 5 CS and CPU dropped down to about 50%.
But I don't want to use AT...I love Helix.
Any ideas? I will be getting a new Mac soonish but can't afford it right now.