When I use pencil or highlighter of PencilKit on debug, and write it quickly, it'll crash. But it's fine on release the error message: -[MTLDebugCommandBuffer lockPurgeableObjects]:2103: failed assertion `MTLResource 0x2816cd0a0 (label: (null)), referenced in cmd buffer 0x11a041400 (label: Live rendering command buffer) is in volatile or empty purgeable state at commit' is it a bug, or am I making something wrong?

I installed Xcode 15 beta 5 as well as the simulator, the iOS simulator runs very very slow, it takes nearly 30 mins to start the device, and after it's started, it's very lag, can anyone help?