Reposting my dump of 200+ wallpapers I "created" by running various MMDs and MikuExpoOnline at very slow speeds to find key poses that looked nice, and then capping them and turning them into nice wallpapers.
Majority of them are 2560x1440 with the source videos being mostly 2k / 4k. Although some were 1920x1080. So the quality will vary.
https://mega.nz/folder/uE8F2IaZ#TD4JI8n2DBdWeALk5TLZvwReadMe has more information.
