I actually had a pretty similar system, a 2700k/32gb/nonraid ssd and went to a r5 3600 and that felt amazing from a system responsiveness standpoint. Like you said it wasn't night and day immediately (say the way a hdd to ssd) felt but after using my new computer for awhile and using the old one the old one felt slower and more limited.

Edit: I also upgraded cpu again from a 3600 to a 5800x, not as much a jump but the upgrade felt so good for me I wanted more and thanks to the cpus sharing am4 all I needed was a new cpu.

I didn't OC and didn't have a raid setup, but the cpu upgrade felt better as my workload on it increased. And the nvme upgrade really felt amazing for my workload. I do web dev/automated testing and the update enabled me to use my computer to stream (sometimes multiple streams) and do my workflow (standing up database, site, running automation, manually testing) without having to close tabs or "prep my computer". The ceiling of what it can handle performantly is much higher which improves my test reliability and quality of life. The amount of stuff I can throw at it before it begins to slow down has been the biggest improvement for me.

If you're happy with your performance in games, I don't know it'll be that much better with the upgrade given what you play now. But for work, I imagine it'll be quite an improvement depending on what you upgrade to/how you use your computer.