We are working on this issue. This thread is for people who have experienced a dramatic slowdown in SkyDemon since our version 3.6.2. We will release a series of build on this thread testing a few changes until we discover what the cause is/was and find a way to work around it.

The first build is at the link below. It is our 3.6.2 version built with current tools. We expect it to have high performance, and the purpose of the build is to prove (to ourselves) that is isn't the build tools, and that it's something within the SkyDemon code over which we have control.

http://www.skydemon.aero/extras/aero.skydemon.skydemonandroid.362newtools.apk