On my HDPI screen XWayland apps on top of Sway are blurry. Apparently this is a known issue. Apparently compiling Sway and its depedency wlroots from source with a patch will fix this issue.
Looks like this patch might have been merged in version Sway 1.3, but I have 1.51 and cannot find the config option attribute mentioned in the merged PR. More looking into required.
On my HDPI screen XWayland apps on top of Sway are blurry. Apparently this is a known issue. Apparently compiling Sway and its depedency wlroots from source with a patch will fix this issue.