Need a hand upgrading my 5 year old pc :)

Hey everyone!

So here is my current build that has been amazing had very few problems over the years but now i'm starting to notice that i'm not getting the best performance anymore (Notice a lot in Helldivers 2 which i've been playing a lot) and was wondering is there anything i could do to make my build better so that I don't have to start from scratch or is it better to start over? If I should start over, what pieces should I keep and bring over to my next build? And if this build can be really helped by a few new pieces, what should I get?

TIA!!!

Current:

Motherboard: MSI Z370-A PRO LGA 1151 (300 Series) Intel Z370 SATA 6Gb/s ATX Intel Motherboard

GPU: MSI GeForce RTX 2070 8GB GDDR6 PCI Express 3.0 x16 Video Card RTX 2070 ARMOR 8G

Cooling: Cooler Master MasterLiquid ML120L RGB Close-Loop CPU Liquid Cooler, 120mm Radiator, Dual Chamber RGB Pump, Dual MF120R RGB Fans, RGB Lighting for AMD Ryzen/Intel LGA1200/1151 LGA 1700 Compatible

CPU: Intel Core i7 8th Gen - Core i7-8700K Coffee Lake 6-Core 3.7 GHz (4.7 GHz Turbo) LGA 1151 (300 Series) 95W BX80684I78700K Desktop Processor Intel UHD Graphics 630

RAM: CORSAIR Vengeance LPX 16GB (2 x 8GB) 288-Pin PC RAM DDR4 2400 (PC4 19200) Desktop Memory Model CMK16GX4M2A2400C16

Power Supply: CORSAIR VS Series, VS650, 650 Watt (650W), Active PFC, 80 PLUS White Certified Power Supply