A strange bug HELP!!!!!!!!!!!!!!!!!!!!!!!

[10_Points]

Here goes. I load KSP. I launch a rocket and it launches at normal speed. I get to orbit. When I launch the second rocket my twr is like 85% hire!!! And It stays that way. My twr of 0.50 is 1.25. Why????? Please help me. I have tried redownloading the game. Using just the stock game. But it stays the same. Someone pleas help me

[Reactordrone]

My first thought is that it might just be the thrust/ Isp difference between sea level and vacuum. Is the actual vehicle performance on the launch noticeably different?

[10_Points]

Yes. I know that. After the first flight my rocket just takes off 2x faster than before. I got a video but I don't know how to post it. If a discord call is ok pls let me know. I AM DESPIRIT.

Edited March 24, 2022 by 10_Points

[10_Points]

Do you know of anyone  who has had the same problem? 

Edited March 24, 2022 by 10_Points

[Superfluous J]

Post a picture of both rockets on the pad, first the one that launches and is fine, and next the one without enough TWR.

Something has to be causing it I just don't know what without more information.

[Anth]

Agreed. We need more information.

Are both rockets identical? Is the payload identical?

The problem you are having I have never heard of unless the rockets or payload is different

Edited March 24, 2022 by Anth12

[10_Points]

YES the rockets I launch is the same type. I launch one into orbit. Go back to the vab and get THE SAME ROCKET on the launchpad and it takes off like  2x faster. Idk why. I have a video but idk how to post it here.

[Anth]

Upload to youtube?

[Tundra]

Yes, put the link in here.    Did you repeat this multiple times?    Or did it occur only once?

[10_Points]

ok it happens every time here is the link                                

 

[Superfluous J]

Your TWR isn't higher on that 3rd launch. Your FPS is.

In the first 2 launches your time in the upper left is yellow. That means the game isn't running at full speed. In the 3rd launch it's green. That means the game IS running at full speed.

As far as why that's happening, no clue.

[Stamp20]

I don't see any problems. On all 3 launches you were going around 81m/s at 300m, so there is no difference. Your TWR is the same in all of the launches, it's visible in the Kerbal Engineer window right of the altimeter.

The only thing that could be making it different is lag during the first launch making it slower.

[Anth]

Interesting. I will do some testing.

[Anth]

Here's what I have found in your video using a time watch:

First Launch in real time in the video takes 16s - 18s to get to 100m/s (400m-430m)
Second Launch in real time in the video takes 16s-18s to get to 100m/s (400m-430m)
Third Launch in real time in the video takes 6 seconds to get to 100m/s (400m-430m)

How the Time Counter works:

In the screenshot (from my computer) below the time counter is green. In KSP that counter changes colours according to if the computer is processing the scene well or not.

Green: The CPU/GPU is currently fast enough to process the scene in real time. i.e. 6 seconds = 6 seconds.
Yellow/Red: The CPU/GPU hasn't the ability to process the scene in real time so 1 second in game takes longer than 1 second.

Your Launches:

First Launch:    Yellow 16s-18s to 100m/s (400m-430m)
Second Launch:    Yellow 16s-18s to 100m/s (400m-430m)
Third Launch:    Green 6s to 100m/s (400m-430m)

Your third launch is actually working correctly and the other two aren't.

Possible Reason:

Might be related to your graphical mods. I would remove them and then retest.

The third launch was done after the second launch got the rocket into orbit. I personally have had changes with performance after returning but not with a simple rocket like yours.

TWR Rules I Follow:

Also 1.4 to 1.5 TWR in my experience is the best.
2.47 is actually pretty high. This can be changed with the thrust limiter for the engine or use another engine/combination. This way the rocket won't be traveling too fast off the pad.

 

Edited March 26, 2022 by Anth12