Lag spikes in Singleplayer?

[Equilibrium21]

How can i fix them? I have perfect fps on MP but i am lagging on SP?

 

[Lancake]

Do you only get them when you get near a planet?

 

[Equilibrium21]

No, always.

 

[Lancake]

Then I don't really know.
Singleplayer is like hosting your own server, and also playing on it so it can be more demanding on your PC since you have to run 2 things at once. It's most likely your CPU spiking which should only happen near planets if you have to generate them.

 

[Warprider]

Maybe some pirates are screwing around? Try opening your local server folder and going through the entities.

 

[AndyP]

Check your logs, you may have your java running in 32bit mode.

Latest "java auto-update" reverted my system to 32bit java, and I had on purpose ONLY 64bit installed before,
but yeah it seems like they only update 32bit and this has then a higher version number and priority than your 64bit variant and it wont get used.

So, best bet would be:
Get latest 64bit JDK and check your memory settings.

- Andy