Potential upgrades for smoother performance

I apologize in advance if this is not in the correct spot but I am needing some advice here. I recently got a Wacom drawing tablet to use with illustrator. I previously had a tiny Huoin tablet that I used for a bit.

When I use my tablet however it tends to crash the program, and often that would happen with my other tablet as well. I am working on a Dell desktop with 8gb of RAM and wondering if maybe I would have less issues if I added a graphic card or more memory. I've read that cards can enhance performance and was wondering if this would be a good investment. 

It's so frustrating because it works just fine on my HP laptop that is a POC, and I've had it for almost 10 years.