KSP Lag...?

[scuba_steve]

Hi there- this is my first post!

Anyway, I'm just trying to play KSP on my mac. Here are its specs:

Macbook Pro 15-inch, Mid 2012 (non-retina)

2.3 GHz Intel Core i7, quad-core

Intel HD Graphics 4000 AND NVIDIA GeForce GT 650M with 512MB of GDDR5 memory

16 GB 1600 DDR3 memory

512 GB SSD

OS X Yosemite 10.10.3

Needless to say, my setup isn't bad at all.

I used to be able to play KSP just fine all the time

. Now, any time I try to fire up the game, the frame rate is appalling, the game chokes up and it's just unplayable.

It's also interesting to note that if I run KSP on a Virtual Machine (Windows 8.1), it will run just fine with no hiccups.

What is this I'm experiencing? Is it a compatibility issue? Please leave some advice- I don't want to keep playing it on Windows, that eats up the CPU. Thanks!

[Supernovy]

What kind of lag are you getting? Does it increase/decrease depending on looking at the sky/ground? Does it depend on how many parts you use? Does it happen when taking off or in orbit or in re-entry?

Since it's a laptop, is it possible it's playing your new KSP install in battery life saving mode instead of high performance mode?

[scuba_steve]

Here's a link to a screen capture demonstrating what I'm talking about (vimeo). https://vimeo.com/126827832

Yes, I am running this on a laptop. No, the energy efficiency/power save mode isn't on... It's running on the dedicated graphics card, a NVIDIA GeForce GT 650M.

In the screen capture, I'm attempting to launch a stock Kerbal X unit, a ship with not many parts that should function normally.

[Master Tao]

That is unusually slow. It sounds like you're having this trouble since KSP 0.25. Have you tested any further back?

It looks like an external process is slowing the game down rather than the game slowing itself down, which is what happens when the physics engine is overloaded. For a quick check, open Activity Monitor > View > All Processes, then click on the % CPU header to sort the processes. Are there any that stay consistently above 20%?

[scuba_steve]

0.25 doesn't work, and neither will anything version below it. When I play KSP, it's typically the only app I have open.

When I opened up Activity monitor, there was no process (besides KSP) that was over 5%. And that application using 5% was activity monitor itself.

[sal_vager]

We need logs, please see the support stickies, your player.log, KSP.log and settings.cfg might help solve this.

[scuba_steve]

How can I do this? I'm not sure how the log system works.