Thanks all for the suggestions. Too many to reply individually, but I will look at all of the games mentioned (trailers, Youtube playthroughs etc.)
Currently leaning towards Witcher, Doom, and some of the strategy games suggested.
I've bought a new PC to actually be able to play modern PC games (specifically Yooka Laylee and Talos Principle).
I would like to buy a game that can use the full spec (GTX1060, 1080p).
Are there any recommendations for AAA releases that push graphics and are well made games? I know absolutely nothing about AAA PC releases. I have no preconcieved ideas about which series to play or not play.
I have mostly played Nintendo games up to now. I have zero experience of shooters or shooter controls. I am innately bad at fast-paced games. I like games with strategic depth, but not high mechanical intensity. I'm willing to try a shooter if there's a steady learning curve.