Curves (and other adjustment layers) handle lag since v21.0.3 - with video capture
I'm not sure what happened after version 21.0.3 but ever since that version you get epic lag on larger, more heavily layered documents, when using adjustment layers - particularly Curves. Working in 16-bit doesn't help matters (but isn't the primary factor).
To describe the behaviour: you used to be able to click on a handle, drag it smoothly, and then the canvas would update a moment later. Now you attempt the same and the handle doesn't move - or takes an age to, and then jumps - as though massively lagged. So actually doing precise adjustments is impossible.
I don't think my system's under specified - and after all the behaviour's not there's with v21.0.3, but in case it's relevant:
- Windows 10 64-bit
- 64GB DDR4
- Samsung 970 Pro NVME application drive
- Samsung 970 EVO Plus NVME scratch disk
- NVidia Quadro RTX 4000 8GB
- Wacom Intuos Pro PTH-851 (although you get the same behaviour with the mouse)
I've also tested it on a similar but slightly older spec - it's not specific to this machine.
I've video captured the behaviour to try to show the comparison... With the latest version, I'm trying to do the same manoeuvre but the the cursor get's stuck and won't drag, then suddenly does and then lags again. The actual curves interface doesn't update smoothly - almost like it's waiting for the (understandably) slower canvas update before moving. But obviously that makes it unusable.
Is there any chance we could go back to the old behaviour/performance - I'm worried that this old version that's usable is going to get depreciated and then I'll stuck!