I upgraded from a 5600X to a 5800X3D which made a big difference. I also upgraded my RTX3070 to an RTX3080 a bit earlier which also made a difference. I’m running at 1440 rez with ultra settings and LOD at 300 in the main though I limit FPS to 30 for smoothness (I can get over 100 just pointing at the sky though).
My 3080 was 2nd hand so did not cost a lot after selling my 3070 on ebay and the 5800X3D has come down a lot in price since I bought mine.
Having gone for a next gen graphics card, I would suggest saving to upgrade the rest of your system to take advantage.