My digital copy is the same. I tried to see if mine was a higher quality but it's crappy. I remember emailing Criterion Collection explaining how it needed to be restored and it was significant to WWI film history and to me personally as my English great grandfather died on the very morning/location that the play ends (March 21, 1918) but I don't think I ever heard back from them.

Also, if you want Colin Clive files I have compiled a crapload since 2011. I have most of his films on mp4 files and a lot of HD pics/scans. DM me if you need stuff.