At First This Jam Is Magnificent,
as well as Halloween Jam 2.
But they both occupy 1Gb of disk space.
And I tryed to solve it.
Everyone Quakelovers already have Arcane Dimensions (if not, You'll be surprised, when You'll get it ;)
To dramatically reduce size of xj19 folder, I cut off AD from it (241Mb vs 458 Mb in original) and usless skyboxes (not used in any maps).
https://drive.google.com/open?id=1bnxOydFX_SltmvovjpTPNmqnMvAHAB0i
(81 Mb)
(If I had no right to do this, please remove my post)
About me:
this is my thread on Quaddicted:
https://www.quaddicted.com/forum/viewtopic.php?id=573