Okay, so I'm not sure if anybody would be reading this anymore considering its been a very long time since someone last made a post. But thought I'll post it anyway.

Basically I have Aether 2 and gilded-games-util-1.7.10-1.9 installed on my Minecraft modpack. However the 'thread lighting' feature in the Gilded Games Util can create weird shadow/lighting bugs commonly when you break a block. They go away though once you break/place a block on it or next to it, or if you was to place a torch near it.

Because of this I decided to install the fixed version of Gilded Games Util (1.7.10-2.0) since it stated that it had gotten rid of the 'Thread Lighting' feature which commonly caused these type of shadow problems. I replaced the old Util in my modpack with the fixed one and the shadow/lighting bugs were gone which was a relief. But then upon entering the Aether I started to get huge lag spikes as well as in other dimensions too. Which never happened with the 1.7.10-1.9 util.

Is there a way to disable the threaded lighting for the 1.7.10-1.9 util to get rid of those shadow issues?

And why do I get lag spikes with the 1.7.10-2.0 util?

I haven't tried any of the other Gilded Games Util versions although I'd like some suggestions if they didn't have the issues I mentioned above. I also have 5.1 GB of RAM allocated to my Modpack.