Usually, the only reason you cannot see the DirectX option is because your Graphics device does not support DirectX 11 and DirectX 9.0 is about to be disabled.
This may possibly explain why you can't see certain effects, but of course it maybe driver related.

The old launcher was disabled only recently, and the new launcher requires a DirectX 11 compatible GPU and also a 64Bit OS, which is maybe another reason you're having issues now.

What is the name your Processor and Graphics device?