Reasons for slow startup?

--------- Summary --------

Render : 21556.366ms

Postprocess : 5177.048ms

Shadows : 99.857ms

FXAA : 4968.579ms

Encoding : 141.813ms

Other : 94.447ms

--------------------------

Total : 26969.675ms


Server restart took almost 10 minutes or so, what are the best ways to optimize this?

Get better drive (SSD) + better processor
++  More ram, especially if you are running it from the same pc you are playing the game on, and shut down any other programs you have running in the background.
The "get more this" has already been debunked, as there are some users with mega-computers that have terrible fps.  It's the game.  The devs spend more time making more things than fixing what the community complains about most.  Took years for them to solve the animals-running-through-rocks bug, all the while they kept adding new things to the game.  It seems every new major update includes an extra 5 minutes to load (including starting up a server).
In response to dravenmeex ():
The "get more this" has already been debunked, as there are some users with mega-computers that have...
Well I have a dinosaur of a pc with a  i3 processor , 16gig of ram with an old R9 3gig graphics card and it loads ok, and as for the "get more this" being debunked it seems most of those with problems running this game have only 8gb ram or are trying to run it on a laptop, So to give us a clue what is your "system" ?,
I rent a server so dont need to start one but it only takes about 3 minutes to stop it ,  update it and restart.
what is an optimal timeframe for server to load? It takes 4~ minutes for me