Buy a used 5700x3D, update your BIOS to the last version, remove heatsink, take out 3600 and put in at least 5700x3D or5800x3D, take out the 16GB and put in 32GB, but any recent GPU you can afford to replace 1060. A 4060 beats the 1080 Ti in everything to give you an idea. It’s only a few frames but it beats it. Even for 1080p, if you turn off DLSS, it’s not overkil. If stores sell a $299USD 5060 I would say to buy that, but any 40 series will be a big boost, combined with 3D CPU, you will be loving it all

Due to overheating issues, I would not buy the best everything. Something like x870-E AORUS MASTER with 9950x, no x3D, and only an MSI RTX 5080 SUPRIM SOC, not 5090, 64GB RAM, USB DAC, and 1000w or 1200w. 1440p with DP 2.1 480Hz.

Research about a case that works for you. Some like a Lian Li case, some like a Fractal Design case, a few like a be quiet! or Corsair case, or NZXT case, look at different options. Then, an x870-E motherboard, maybe a Gigabyte Master or ASRock Taichi, Ryzen 9950x processor, 64GB RAM, and a RTX 5090.

The 4070 Ti SUPER is the best valued card of the whole 40 series with more RAM over 4070 Ti and a wider bus over the 4070 Ti. You did excellent.