Most viewers consider this an interesting curiosity but a "painful experience" that over-explains the plot.
The "Spicediver" Fan Edit (Dune: The Alternative Edition Redux) Dune - Extended(1984)H265.mp4
This version was prepared for television in 1988 without Lynch’s involvement, leading him to remove his name from the credits. Most viewers consider this an interesting curiosity but
Critics and fans generally find it clunky. It uses repeated "stock footage" to pad the runtime and includes rough deleted scenes where the Fremen's eyes are not blue because the post-production effects were never finished. replacing Princess Irulan's original intro.
It is roughly 177 minutes long and adds nearly 40 minutes of footage. It features a new 10-minute prologue narrated by a male voice over still paintings, replacing Princess Irulan's original intro.