Thanks maggstrom. Thankfully the file is small enough to directly attach here in JIRA.
Oh gosh, I downloaded it years ago, back when 1.3.2 was the current release, so I'm not surprised if the link isn't good anymore. I just unzip a copy of that whenever I want to play it again.
Let me see if can get you a dropbox link to my copy, hope noobcrew (map author) doesn't mind...
EDIT: dropbox seems to be blocking the link as restricted content. I'll try something else.
https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/maps/1473433-surv-skyblock
There's the original download link. Standard skyblock, same as ever. Direct link is behind and adf.ly wall.
Also me.
ALL movement and actions are at increased animation speed; walking and running are faster in actual ground speed, breaking blocks appears to still be at the proper break speed but the tool swing animation of such is at hyper speed.