It would be interesting what specific effect you do need, because a lot of effects can be done in vectors inside Corel Draw, knowing how to use the tools.
Here are some examples of what you mention bevel and shadow.
A-D are done with just some clicks.
A) Effects > Bisel + Shadow
B) Extrude + Shadow (extrude to 0)
C) Extrude + Shadow
D) Plus perspective and some adjusts on the gradients
E) Is to give an example of the versatility in doing all inside Corel. I'm sure I can push the design way further.
I am used to doing a lot of retouching on cases you think you need Photoshop actually inside Corel Draw, like this exercise: Creating an implied floor with light
Because you need to know the tools.
But there is nothing wrong in combining several applications. Actually, you in most cases need to do that.
Edited sometime later.
If I write text in Photoshop then that text is very low quality
To avoid using Ps for things you do not need, stick to the things you actually need it.
There are a few things that are hard to do in vectors alone, like some blurry effects, in this case, nothing is preventing you to do that part alone, with the proper resolution and size, and with a transparent background.
Actually, this is probably the "optimum" way to process big files.
I must add that you have access to a lot of raster effects to be applied directly inside Corel Draw without needing to leave the application and pretty tight integration with PhotoPaint.