If you are using the 16 km atmosphere mods, switch to the 8km version.
Due to system limitations, I have to run the 8km Atmosphere mod myself.
What you are describing sounds really odd to me.
If you post your system specs, it will likely help shed some light on the issue.
There are lots of good guys in this forum that can help you adjust things.
Don't give up the ship just yet.
Also, check the GW sticky thread as we resolve problems... IE the Seafloor issue solved there!
