Have been trying for months to get a filter to work for Oil Paint

May I offer more of my two-cents worth, in the hope of perhaps saving you some of the time I've devoted (some would say wasted) in the same search?

Note: Most of the oil paint actions offered in Adobe Exchange use the oil paint filter. 

One year ago I reviewed EVERYTHING on the market--programs/apps, plug-ins, and third-party brushes for Photoshop--looking for something that could recreate the three-dimensionality of impasto painting or dry brush, because I love texture in a painting.  Verve, if you're willing to devote lots of time to learn it, was the best I found for creating texture with a brush tool. 

Corel Painter has an extremely steep learning curve for those who want to paint with it, which is the primary purpose of the program.  Corel Painter Essentials is designed for folks who want to paint over a photograph or paint more simply with brushes.  Corel's PaintShop Pro is their equivalent to Photoshop.  Corel's programs have a reputation for being buggy and slow, so I highly recommend checking user reviews of the latest edition before buying.

I have experimented, again and again, with brushes in Photoshop.  Mixer brushes combine colors but don't add texture.  When I learned that K.T. Webster, prior to joining the Adobe team, sold his impasto brushes with an accompanying style to bring out the three-dimensionality,  I was intrigued.  I was able to eventually create ny own custom style, to use with some of Webster's brush presets, that realistically imitates the texture of dry brush.  In my opinion, without such a style, Webster's brushes look as flat as the ones created by Adobe.

Some artists who use traditional media favor a smooth style devoid of visible brush strokes--the only texture you might discern is the underlying canvas.  There are many ways in Photoshop to give an image the look of being on canvas, and you can combine it with most of the filters.

There are also lots of videos on Youtube showing how to create "smudge paintings" in Photoshoop, if that technique interests you.

Adobe's new program, Fresco, is designed exclusively for Apple Pencil.  I've read claims that you can create richly textured strokes with it, but none of the examples in their ads seem to bear this out.  However, if you have an iPad, and want to paint and draw from scratch, this app would be well worth checking out.

Thanks for the information and I looked at the tutorial for oil pant and you are right I don't like the results. Too much texture and not lifelike at all. Put before I got photoshop 2020 the oil paint almost gave more of comic or cartooninsh efect I liked. I did try changing my cache level and tile size as suggested by someone else, and got oil paint to now at least show up but doesn't see to change the imgae I have but it is a start. I don't think I am going to worry about that much. I have other filters that do similar things anyway, but Thanks for the information.

I looked at what you sent me. Thanks but I can't seem to set the settings the same in your screenshot. When I open preference and then performance and then advance setting for draw mode I can't check Use OpenCl my ideal range is 3791-4963. The only thing I was able to change was cache level from 2 to 4 and Cache tile Size 1024K. I did that and didn't the error message as usual but looked like nothing changed. Thanks for trying.