You *really* need to determine whether that (old) video card is compatible with the version of PS you are using.
Start with this:
https://helpx.adobe.com/photoshop/kb/photoshop-cc-gpu-card-faq.html
Notice that the 200 is not listed. My guess is that it will only be fully compatible with older versions of PS. You will have to check this yourself. The amount of RAM on the video card is definitely not the only thing that matters.
I realize that your funds are limited, but I have to add that 4 Gig of RAM is dreadfully small to manipulate images from modern cameras which often produce images with over 4000 pixels in the long dimension. In addition, depending on the version of the OS, all that might be needed for the OS, and then Adobe usually states that PS needs (at the bare minimum) 2 Gig above that to run. I'm not at my computer at the moment, but as I recall, my Win 10 system uses (... I just checked...) 5.58 Gig of RAM just for the OS, a virus checker, my password manager, and Adobe's Creative Cloud wrapper application, but no other user applications running (i.e., no browser, no Word, no music, no YouTube, etc.).
If you feel like playing around, fine, but realize that you may run into a dead end with such severe limitations (at least on modern operating systems, modern versions of PS, and images from modern, large pixel count cameras).
Here's another very useful link for the situation you are facing:
https://www.photoshopgurus.com/forum/redirect-to/?redirect=https://www.pugetsystems.com/recommended/Recommended-Systems-for-Adobe-Photoshop-139/Hardware-Recommendations
Here is a recent thread in which people were trying to get by with minimal hardware:
https://www.photoshopgurus.com/forum/photoshop-troubleshooting/56777-laggy-crashy-computer-photoshop.html
The best of luck.
Tom M
