goldsoundz

I don't know whether I've played it since I upgraded to Yosemite actually so I'm not sure if it's got worse. To me it looks like a memory leak in the game rather than a problem with the operating system (a guess though). It'll be a right pain but it is possible - the main issue will be whether or not you kept a copy of Mavericks. There's a few guides on the internet on how to downgrade but I'm not going to link as I haven't tested any of them. If you bought your Mac with Yosemite already installed, do not downgrade - the drivers for your new system might not be included in the older operating system. Personally I wouldn't bother for one game - if you're really keen to get it working now, a better option might be to Bootcamp Windows instead. - - - Updated - - - Hey mods, is this thread the same issues too? Looks like it - I'm certainly getting those graphical glitches too.

Looks like the issue I'm having is covered here - I can't see a way of deleting this post so please reply over there instead

Same problems here on my 2013 iMac i7. I couldn't get through more than 5 mins of gameplay until I set textures to half res. I've just played for an hour before finally it crashed back to the desktop.

I've clocked about 120hrs on KSP on my 2013 iMac i7 8GB over the various iterations throughout early access. Having stopped playing it for a while I was excited to start again when 1.0 was released. Unfortunately I can't get through more than a few minutes without a spinning beachball or a crash back to the desktop. I can't even provide a way to recreate the problem as it seems totally random. So far I've got problems in the following ways: Quit to desktop: most common, has happened 10 times in as many minutes Spinning beachball: shortly after launch Spinning beachball: after changing settings Graphical: Grey "shadow" appearing between lines on the parachute Graphical: white flickering Graphical: white blocks appearing over the upper 1cm of the screen I've tried deleting the game using steam, then clearing out the KSP folder under Application Data and reinstalling but get the same issue. I have no mods installed and I'm using the latest version (it says 1.0.2, which is odd since I thought we were only at 1.0.1) I've had pretty much no problems during early access, so was surprised to find it completely unplayable now