Cursor lag in timeline

I am getting a similar problem. Until a week or so ago my timeline worked fine. Now my cursor is disappearing while performing operations and there is sometimes seconds long lag between moving the mouse and the action happening on the screen.

The problem comes and goes. I have tried restarting my Macbook, clearing cache and render files, and making sure that all other apps are closed. Sometimes clearing render files seems to improve performance but the problem quickly returns.

I have attached a video of adjusting the gain on an audio clip for an example. For the first four seconds it works properly then it suddenly starts to lag. You will see that the PP cursor disappears too. The timeline was not playing while I was adjusting the clip and had not been playing for a few minutes (while I was setting up screen recording), and I am using ProRes proxies. There is nothing unusual about the audio, either.

Thanks

Geoff

PP Version: 24.1.0 (Build 85)

Hardware Overview:

  Model Name: MacBook Pro

  Model Identifier: MacBookPro18,4

  Model Number: Z15H000UBX/A

  Chip: Apple M1 Max

  Total Number of Cores: 10 (8 performance and 2 efficiency)

  Memory: 64 GB

  System Firmware Version: 10151.41.12

  OS Loader Version: 10151.41.12

 Chipset Model: Apple M1 Max

  Type: GPU

  Bus: Built-In

  Total Number of Cores: 24

  Vendor: Apple (0x106b)

  Metal Support: Metal 3

  Displays:

BenQ SW2700:

  Resolution: 2560 x 1440 (QHD/WQHD - Wide Quad High Definition)

  UI Looks like: 2560 x 1440 @ 60.00Hz

  Main Display: Yes

  Mirror: Off

  Online: Yes

  Rotation: Supported

Colour LCD:

  Display Type: Built-in Liquid Retina XDR Display

  Resolution: 3024x1964 Retina

  Mirror: Off

  Online: Yes

  Automatically Adjust Brightness: Yes

  Connection Type: Internal