Additional to reply of Sykosis
https://f95zone.to/threads/illusion...lect-2-card-sharing-thread.44248/post-7918437 I recommend you a torrent download if your country has no restrictions.
The torrent file you can also get here
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, for the game only u need to download this one [ScrewThisNoise] HoneySelect 2 DX BetterRepack R8.1.7z (46.9 GiB).
After download look at this nice guide from Sykosis
https://f95zone.to/threads/illusion...lect-2-card-sharing-thread.44248/post-7876189. You can follow this also for your R4.01 instead of R8.
Furthermore don´t forget to place your game main folder as near as possible to the top of the drive to avoid long file pathes, and keep your old R4.01 as Backup (if u have enough drive space) for a while, til your new R8.1 is running well.