I have (sort of) good news. I narrowed it down and it has nothing to do with anything regarding the amount of actors,streaming levels or whatever. It has to do with the fact that unreal does not use my GPU and (i assume) it offloads all the calculations to my CPU and that is the reason for the slowdown.
Lets take it from the start. I was (still am!) so stressed out with me not being able to work all these days that i decided when i suspected that it was a GPU (couldn’t possibly imagine then that it was not hardware but software) malfunction to go and buy an ASUS GTX980 STRIX.
I formatted my system, re-installed win 8.1 installed the new card and when i opened for the first time unreal, BOOM! 120FPS on the editor and 120FPS on the standalone window at the same time! I go to bed since it was really late ready to enjoy my victory (apart from the fact that i am 700$ poorer lol ) over my sleep.
When i open up Unreal again this morning i see that terrible cpu and GPU(i assumed) meltdown .When i stopped swearing i had an epiphany to open up the GPU monitor. And guess what ? :
As you can see my cpu is melting and my gpu is not even bothering.On the second picture you can see that it never goes beyond 15% .
What the heck is going on? This is not driver specific since it does the exact same thing with 2 different gpu brands. I tried to play around with nvidia settings (maximum performance etc) but with no success. The second i fire up a benchmark ( 3d mark, passmark etc) everything goes to 100% and my score ratings are superb.
Have you ever heard something like this before? Another thing that needs our attention are the newly created seams (you can see them at the second picture) between tiles. But i believe they are caused by the fact that the GPU does not render anything as its supposed to do.
Heeelp!