[Very low CPU1 utilization = poor fps]

I'm on horrible specs (CPU: i3-3120M, 6GB RAM, integrated graphics Intel HD 4000), and I have a similar problem, though it only occurs when I look at the surface of Duna. I have very bad FPS when I look at Duna, and CPU usage is low.

Try turning down settings to the lowest, and try removing your mods first. Tell us your results.

[Can't refuel with 3 kerbal command pod]

Um... don't you use right shift + right click on the two tanks...?

[Objectives not registering]

Try removing all mods that do not relate to the parts or contracts, and test if the problem is there.

[Extremely low FPS when looking at surface of Duna]

Also, question: should this be moved to support for unmodded installs, because this is not mod-caused?

[Extremely low FPS when looking at surface of Duna]

In addition, I have reinstalled the game, put in the same saves, and put in the same settings. Same horrible lag when I look at Duna (even when I'm on the night side).

[Extremely low FPS when looking at surface of Duna]

I do not know what log files you are talking about. However, I found KSP.log in my game folder. https://drive.google.com/open?id=1Zq1r9nxBg4DSzzXbGtdOvPFpfmkNX8wK

Also, just had my first post that didn't require moderator approval yay lol

[Extremely low FPS when looking at surface of Duna]

15 hours ago, Xd the great said:

Is the alarm clock compatible with your version? Can you upload the log files for us to see?

I am highly positive that Kerbal Alarm Clock has nothing to do with my lag. The only reason why I am posting in this category is because of that one mod (and currently 2, with Kerbal Engineer Redux). Kerbal Alarm Clock works perfectly fine for me, with no error messages, so I assume that is the correct version (or at least a version that works). Even without Kerbal Alarm Clock, the lag occurs.

[Extremely low FPS when looking at surface of Duna]

I am doing a manned mission to Duna and back. I have only one mod installed, which is Kerbal Alarm Clock. Here is my problem: when I am looking out into space from Duna orbit, FPS is excellent. When I look at Duna's surface, FPS crashes down to about 3 FPS.

Here are my graphics settings:

My "Max Physics Delta-Time per Frame" is 0.04; I have tried lowering it to 0.03 and even tried 0.12, and all attempts have resulted in no improvement.

My computer specs:

• CPU: Intel i3-3120M (4 cores, 2.5 GHz)
• Integrated graphics (Intel HD 4000)
• 6 GB RAM
• OS: Xubuntu 18.04 (Linux)

I have tried launching the 64 bit version of KSP, which resulted in the same amount of lag. I have also tried lowering the texture quality to 1/8. Moreover, I have tried disabling V-Sync and setting the pixel light count to 0. The game has been reinstalled, to no avail. Furthermore, I have noticed that CPU usage decreases when I look at Duna, which makes absolutely no sense at all, considering the extreme lag.

Is there anything else I can do to get rid of this horrendous lag? It is difficult to land and takeoff with the lag. Thanks for any help!

[How can I reduce flexing of a long fuselage?]

I have a spaceplane that is slightly unstable at high speeds in the atmosphere. From looking at a side view while it is unstable, I can see that the fuselage is slightly flexing back and forth, which is the likely cause of the instability. I'm not sure how to use struts or any structural part to properly tie together the different parts of the fuselage together.

Thanks for any help!

[How can I prevent this spaceplane from getting violently ripped apart at high speeds?]

I am attempting to build a SSTO spaceplane. However, at high speeds (about 1.3 km/s), if I turn (even slightly to change pitch a few degrees), it is easy to turn too violently and have my plane break apart from the extreme g-forces. I have already strutted my wings and engines together. Also, I have tried reducing the authority on the control surfaces, but reducing it too far has made it hard to take off. The center of lift is always behind the center of mass during flight.

Here are screenshots of my spaceplane:

Thanks for any help!

[Design cause uncontrollable spin at reentry]

I have sent a small probe to Eve before. I only had one heat shield at the bottom, and it didn't flip; the probe entered Eve very well. I suggest that you remove the extra heat shields and try that.

I think this works because when the craft tilts, there is a small force applied to the exposed side that corrects the rotation.