30 fps cap with V-Sync disabled (since 1.8.0, only DirectX)

[Grille]

Hi

I wanted to play KSP again since a long time, and came across an annoying problem/bug.

The game is since 1.8.0 locked to 30 fps.
Older versions as 1.8.0 run fine at 60fps or higher.

The problem only appears when KSP run with DirectX. (If I use -force-opengl, the fps are ok)
and only when the game window is in focus, when I switch to the Task-Manager, for example, it is unlimited

Here are some data from the Kerbal surface:
* OpenGL
   65fps
   CPU 64%
   GPU 100%
* DirectX (focused)
   30fps
   CPU 27%
   GPU 30%
* DirectX (not focused)
   104fps
   CPU 82%
   GPU 100%

My laptop's specs:
CPU i5 7300HQ, GPU: gtx1050, RAM: 16gb ddr4, Win10 64bit

Things I already tried:
* disable "V-Sync" ingame and in the NVIDIA control panel.
* set "Frame Limit" to Default.
* verify game files via Steam

Unfortunately none of this helped..

Is that possibly a bug with the new unity version 2019.2.2f1.?

I don't really want to use -force-opengl because it has a lot of bugs in Windows, still better than 30fps, 
but i would very much like my KSP smoothly and without graphic bugs... 


Here are log files and system information:
Player.log
https://drive.google.com/file/d/1FM3QTPw3KuLReteSDu3NnUcq8GblJXQ8/view?usp=sharing
KSP.log
https://drive.google.com/file/d/137zuDlt7VZ4z6DKAafJNDXUzB532MTdl/view?usp=sharing
DxDiag.txt
https://drive.google.com/file/d/1Z_jKtZ0n-io4IFsXaTqPKuhn8pM-griU/view?usp=sharing

I hope someone has an idea here

Edited January 18, 2020 by Grille
add links and new information

[DunaManiac]

Do you have any logs? Sometimes log spam can really lower the frame rate. If that isn't the problem tjhen I have no idea.

Edited January 11, 2020 by DunaManiac

[Grille]

I have just tested 1.7.3 again and it runs at 250 fps without problems.
So it is most likely a bug with the 1.8.0+ versions.

@DunaManiac
It does not look as if an unusually large number of logs were written.
thanks anyway for the suggestion.

[Grille]

Update to 1.9

Still the same Problem with a little improvement.

 

The game is now initially locked at 60 fps, but drops back to 30 fps a few minutes later
If I want to play permanently at 60fps, I have to restart the game about once an hour. 
I only get this "improvement" if I have enabled v-sync, if I disable vsync, I become straight 30fps

KSP is the only game that has such problems at the moment.

ps: The bugs with force-opengl become worse, the ground now flicker partital slightly black... 
It would be really great, if at least one of the renderers would work without any problems on my PC.