That's obviously a capable machine, although Photoshop does not always play nicely with AMD hardware. I'd say something is definitely going on with your system.
What are your drives setup? Is Windows and Program Files on a different drive to your Scratch Space?
What sort of sizes are you seeing for Photoshop Temp files in the scratch drive, and are they closing when you close Photoshop?
What size document are you seeing problems with, and what is it's bit depth and layer count?
We have an impromptu test we use among ourselves here.
30,000 X 30,000 8bit document
And run a 5000pixel fully hard brush with 1% spacing corner to corner.
I am seeing 8.2 seconds with 25.7, but 11.2 seconds on 25.9 m.2603. Both directly after restarting Photoshop.
i9-13900K, RTX4080, 64Gb RAM, two Samsung 2Tb 980Pros plus several previous gen NVMe and SSD drives.
-Free transform has a sluggish delay, particularly if the object is a smart object.
-Moving a layer is slow, probably because of the new auto highlight layer feature.
-transforming a layer with a rotate or anything, takes time, even showing a progress bar for the simplest transform procedures.
By @donbarrum
I wouldn't expect any of that other than possibly FT with a complex SO.
Hover Layer Bounds souldn't have any impact, and you can disable it to count it out. HLB and Smart Guides are all instant for me, even with large documents with lots of layers.
Definitely something going on. Can you go Help > System Info > Copy and paste to this thread? Perhaps we can persuade @CoryShubert to take a look and offer some suggestions.
What driver are you using with the RTX4090? the Studio drivers work beter than the Game Ready drivers with Photoshop.
Can you use Task Manager > Performance tab and Resource monitor and see if you can tie down a bottlenecks. If you can find something suspect, give us the details and we/I will try and test the same conditions. I feel sure we can get it sorted for you.
... View more