After buying, I played it a few times and did a few missions in the campaign.
Then I ran in to the well known bugs. I went back to SH3 GWX and I'll give SH5 a try after the coming major bug fix.
BTW, a Dutch/Flemish games magazine was absolutely delighted with SH5, giving it a 88/100 rating. Clearly reviewed by someone who never played SH3 or 4 in-depth, and was grabbed by the, I must admit, very pretty presentation of the game.