Unity app frames are dropping on BlueStacks

Question

I created a simple test app

Nothing but one UI animation (Target frame set to 60)

After building, I ran it on BlueStacks.

Frame is abnormal in BlueStacks

Initially, it maintains 60 frames, but

It changed to 29~30 frames irregularly.

In the profiler the Semaphore.WaitForSignal marker is taking up more than 18ms

I tried changing various settings, but it didn't work.

Is there any solution to this problem?

60frame

30frame

The version used was Unity 2022.3.16f1.

I made a test app because Frame was dropped only in BlueStacks.

Even in apps where there is nothing, 30 frames occur irregularly.