Hey There 
Got A Question , I Was Trying To Use The New Water System In Version 4.26.2 On A M1 Mac And I Discovered A Lot Of People Have Some Kinda The Same Issues. I Followed All Tips And Tricks And Was Wondering If Anyone Has A Solution To My Problem ?!
The Problem Is That I Got The Spline I Got Everything And Tried Everything But I Got Some Strange Glitching When I Put Some Water In My Scene .
It Glitches Straight Up Into The Sky , Looks Like Some Wierd Stripes At Random Places Around The Spline Where The Water Should Be ?
I Think Also I See The Correct Water For A Glimps Of A Secound In The Begining Before It Starts The Glitch , Would Be Nice To Use The Water !
If Ya Have Some Solution Please Write Me Back
Thnx