Blender 2.8 on MacBook Pro Running Slow

Hello everyone!

I am new to Blender and this is my first post.

My problem is that Blender 2.8 runs very slow on my 2012 Mac Book Pro with a retina screen. The specs are : 2.3 GHz Intel Core i7, SSD, 16 GB RAM, NVIDIA GeForce GT 650M 1 GB, Intel HD Graphics 4000 1536 MB.

Blender works fine in Solid mode but it cannot cope with the Render mode so I cannot set up the lights or work with it properly.

Are there any settings I can change or is my computer too old for blender now?

Thanks in advance!