Given it's a Javascript program I'm not sure how Photopea solves those problems with Adobe Photoshop other than cost.
Given it's a Javascript program I'm not sure how Photopea solves those problems with Adobe Photoshop other than cost.
It also "boots" almost instantly, and doesn't require installing anything other than a browser.
The biggest risk I can think of is that the old product may be in some case vulnerable to compromised documents and by sharing the sandbox folder with your main computer you could in theory get the main machine compromised.
The core engine might be fast for computational intensive stuff (eg: radial blur, liquify, etc) but the UI itself is tremendously clunky.
I used to love using PS (and the whole Adobe suite) but now I dread it.
WebGL 2.0 could be a band aid fix, but it is quite limited compared to CUDA. I'd also expect a bunch of compatibility issues.
As a side note, Photopea already uses WebAssembly.