I use my pc for gaming, and recently got into simulation games. Have read that they are more CPU hungry and I wish for more FPS in games like Cities Skylines, ETS2, Farming Sim 19 etc.
Current rig:
Mother board: Asus B350 Plus
CPU: AMD Ryzen 5 1600X
GPU: MSI GeForce GTX 1080Ti
RAM: Kingston HyperX 2x8GB 2666Mhz CL16
SSD: (Probably Samsung TLC or similar) 2,5" Sata III 120GB (OS)
HDD: Seagate 1TB 7200rpm (in good condition, nearly full)
2 Full HD 60Hz monitors, 1 used for games.
Currently getting max 55 FPS in Cities Skylines when starting new game and drops down to 15 - 20 after building up.
Same for ETS2 getting 60+ outside of cities, in certain cities might drop down to 30.
In other games I can get 60+ FPS on max settings. (Witcher 3, Rust, Assassin's Creed games, heavily modded Skyrim and whatever)
I think my CPU is bottlenecking in Cities Skylines (Graphic settings don't make any difference) but not sure about ETS2 or FS19 or similar games.
I also sometimes host small 2-5 player servers in some games and can see performance drop and even stuttering when there is a lot of things happening simultaneously.
If I upgrade my CPU what should I upgrade to and how much increase in FPS should I get in general? And how much does upgrading to 1TB SSD (probably 3D TLC, too expensive to get single or double layer) affect the over all performance?