Photoshop Unacceptably Slow
Windows 11 Pro 22H2, build 22621.819
i9-9900k, 64gb RAM, RTX3080ti + GTX1650 on latest drivers
1tb NVMe SSD + 500gb SATA SSD
1440p144 G-Sync main display (3080ti-driven, all work being done here)
2x 4k60 secondary displays (1650-driven, no work being done here)
Opening photoshop takes a very long time, and always has a weird hitch that creates a black border around the bottom right of the splash screen. Clicking during this time triggers Windows' non-responding application window:

Once Photoshop is loaded (8-20 seconds later), I can create a new document. The new document window, new or legacy, sometimes takes several seconds to render.
Creating a new document will either instantly bring me to the blank canvas as expected, or have a long delay before presenting me with the blank canvas, the panes loading up asynchronously in a jerky fashion.
Paste in my clipboard, such as the image pasted above. This usually happens instantly, but sometimes takes a very long time (5-15 seconds). Resolution does not impact this.
Ctrl+T to begin transforming the layer I'm on, which is my pasted content. This reliably freezes Photoshop for up to 30 seconds.
After doing these operations, Photoshop is highly responsive as expected for these specific operations -- pasting in a new image, transforming it, etc..
Other operations have a significant initial performance issue, but then are fine for subsequent uses. It's as if the procedure hasn't been loaded. If I close and reopen Photoshop, I'm back to square one and the first use of these functions have significant load times.
Performance settings are default -- 70% memory allocation, 3080ti GPU-accelerated with full compatibility listed.
I have tried:
- Resetting to default preferences
- Reinstalling Photoshop entirely, including preference deletion
- Adjusting memory allocation down to 10gb
- Disabling GPU acceleration
- Closing every other running application on the computer
- Switching to legacy modes for new document window, transform, etc.
- Installing Adobe Genuine Service
- Closing Creative Cloud
I'm at a loss here. Previous editions of Photoshop (~2020?) did not have this issue. It's been getting progressively worse since March or so of this year. I have not tried installing an old version of Photoshop, but now that I write this, I will later today.
