Performance Severe Drop in FPS in flight.

[Infinite Aerospace]

Reported Version: v0.1.4 (latest) | Mods: none | Can replicate without mods? Yes 
OS: Windows 11 | CPU: RYZEN7 5800H | GPU: RTX 3060 (M) | RAM: 32GB

 

What happens? Enormous frame-rate drop, frame-rate is fairly consistent and smooth during the initial launch and first 3/4 of the ascent to orbit. Frame-rate between 32 - 42 FPS in this phase depending on where the camera is looking.

 

Enormous drop to between 1 - 4 FPS at a specific altitude range before returning to a stable and smooth frame-rate above that altitude. The problem didn't occur in 0.1.3 and it doesn't seem to be a case of 'high part count' as it's just one of the stock builds. (The one with four strap-on boosters).

 

Between 60,000 metres and 75,000 metres the game is a literal slide show and the rocket responds to almost no user input (I suspect due to the frame-rate). It is very specifically this altitude range, almost like at the bottom end akin to a switch, it's that immediate. The same applies at the upper end of the range, the moment I go above 75,000 the game immediately returns to its previous state.

 

Edit to the above, the altitude range this issue occurs is a lot less specific than I initially thought.

 

The game is a fresh install (0.1.4) with the latest NVIDIA drivers, laptop connected to charger so operating at max power state. Game is installed on M.2 Solid State Drive.

 

Appreciate any support anyone can offer. I haven't tested whether the performance drop-off is specific to Kerbin or whether it affects other planetary bodies.

 

Resolution is 1920*1080 and graphics settings are whatever the game default is for this GPU.

Anth12 Edit: Could Be Related to:

 

Edited October 31, 2023 by The Space Peacock
Adding links to other bug reports

[Anth]

@Infinite Aerospace Changed the title to be more specific. If its inaccurate please tell me.

[Infinite Aerospace]

9 hours ago, Anth12 said:

@Infinite Aerospace Changed the title to be more specific. If its inaccurate please tell me.

Ah! I've been wanting to edit this (but couldn't find it) as the problem occurs across a much broader range of altitudes, it's a lot more random than I initially thought.

 

There's also something else I'd like to add, which is pausing the game for a minute or two seems to fix the issue. There doesn't appear to be any commonality between rockets either.

[Vortygont]

@Anth12 Maybe merge this report with this? 

Or this? :

 

I believe it is the same problem as in the first report

 

[Infinite Aerospace]

4 hours ago, Vortygont said:

@Anth12 Maybe merge this report with this? 

Or this? :

 

I believe it is the same problem as in the first report

 

To be fair I'd be inclined to agree it's the same issue. It has more or less the same description but the hit to frame-rate for me is much, much worse than 5 -12 FPS.

[Anth]

The following shows a gradual drop in fps as the rocket gets higher which appears to be 0.1.4.0 related:

This has happened since 0.1.0.0:

@Infinite Aerospace
Your bug report indicates that there is an issue between 60000m and 75000m
This seems new to 0.1.4.0 as well

@Vortygont To me they all appear to be separate issues.

Edited September 19, 2023 by Anth12

[Infinite Aerospace]

21 minutes ago, Anth12 said:

The following shows a gradual drop in fps as the rocket gets higher which appears to be 0.1.4.0 related:

This has happened since 0.1.0.0:

@Infinite Aerospace
Your bug report indicates that there is an issue between 60000m and 75000m
This seems new to 0.1.4.0 as well

@Vortygont To me they all appear to be separate issues.

The first few times it occurred it was quite a specific altitude, but since then it has occurred not long after initial launch, but it's the same general issue it seems. Runs nice and smooth then, slideshow then smooth again. Pausing it, and Alt - Tabbing out of the game for a short while seems to alleviate it too. So it's not specific just to those altitudes.

[Anth]

12 hours ago, Infinite Aerospace said:

The first few times it occurred it was quite a specific altitude, but since then it has occurred not long after initial launch, but it's the same general issue it seems. Runs nice and smooth then, slideshow then smooth again. Pausing it, and Alt - Tabbing out of the game for a short while seems to alleviate it too. So it's not specific just to those altitudes.

What you are describing is potentially experiencing multiple bugs at the same time. Combining the bug reports could muddy the waters and make it harder to locate the separate issues.

[Anth]

@Infinite Aerospace

I checked with @Darrin H, keeping them separate is ok, I will just note within the report that they could be related and they'll do the same thing on their end.

Edited September 19, 2023 by Anth12

[Datau03]

Reported Version: v0.1.5 (latest) | Mods: none | Can replicate without mods? Yes 
OS: Windows 11 Pro 64-bit (10.0, Build 22621) (22621.ni_release.220506-1250) | CPU: 11th Gen Intel(R) Core(TM) i7-11700K @ 3.60GHz (16 CPUs), ~3.6GHz | GPU: NVIDIA GeForce RTX 3070 Ti | RAM: 32768MB RAM 3200MHz (4 Sticks Corsair Vengeance RGB Pro 8GB)

Expected behaviour: Relatively consistent framerate, with just slight differences corresponding to different phases of flight

Observed Behaviour: FPS suddenly dropping from 40+ to around 9 in any flight phase near Kerbin and staying there for a few seconds to minutes, then going up again. 

Steps to replicate: Fly a craft in Kerbin's atmosphere or near/in low orbit

The video attached shows a craft ascending into Kerbin orbit, but that is just an example, as this happens in many other situations too. 

I also attached the KSP2.log file. The mission shown in the Video is the last done before I uploaded the log here, so relevant stuff for this example is propably near the end. 

Included Attachments:

FPSDropsinKSP2MitClipchamperstellt.mp4

Ksp2-2.log

[The Space Peacock]

@Infinite Aerospace moved your report out of the archive

 

@Datau03 merged your report with this one