You answer:

Hello. Ive been trying to use the newest version of PS, however it lags horribly in my system. I cannot work like this, so I want to know which version is the most "optimal" for my computer specs.

Specs:

Processor Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, 3601 Mhz, 4 Core(s), 8 Logical Processor(s)

RAM 8GB, DDR3

MSI NVIDIA GTX 1060 6GB

Thanks!