Gaming PC Doesn't Run Games Well

My gaming computer cannot run games that it should be able to. My computer has better components that are better than the recommended ones on games I play, yet I still get lag (online games and offline). I have to put my settings as low as they will go, and change my resolution lower than my native resolution, and I still get small blips of lag every now and then. I do have a wireless connection, but I have a fairly good connection at around 10 - 15 mbps upload and 40 - 45 mbps download. I am very sure that my drivers are up to date, because I just build this computer under 2 weeks ago.

My Computer Specs:
Graphics Card: MSI R9 390 GAMING 8G Graphics Card
Fans: Corsair Air Series AF120 LED Quiet Edition High Airflow Fan Twin Pack - Red (CO-9050016-RLED)
Hard Drive: Seagate 2TB Desktop Gaming SSHD(Solid State Hybrid Drive) SATA 6Gb/s 64MB Cache 3.5-Inch Internal Bare Drive (ST2000DX001)
RAM: Kingston HyperX FURY 8GB Kit (2x4GB) 1866MHz DDR3 CL10 DIMM - Red (HX318C10FRK2/8)
CPU: Intel Core i5-4460 LGA 1150 CPU - BX80646I54460
Case: NZXT S340 Mid Tower Case CA-S340MB-GR Matte Black/Red
Motherboard: Gigabyte GA-Z97X-GAMING 3 LGA 1150 Z97 Gaming Audio and Networking ATX Motherboard
SSD: Kingston Digital 120GB SSDNow V300 SATA 3 2.5 (7mm height) Solid State Drive (SV300S37A/120G)
OS: Windows 10

Borderlands 2, a game that does not require a connection, constantly has a slow and laggy feel when trying to run it at it's recommended settings. When running it on the lowest settings, it plays pretty smooth, except for occasional lag blips

Borderlands 2 recommended specs:
OS: Windows XP SP3/Vista/Win 7
Processor: 2.3 GHz Quad Core processor
Memory: 2 GB
Hard Disk Space: 20 GB free
Video Memory: 512MB
Video Card: NVIDIA GeForce GTX 560 / ATI Radeon HD 5850
Sound: DirectX 9.0c Compatible
Other Requirements: Initial installation requires one-time internet connection for Steam authentication; software installations required (included with the game) include Steam Client, DirectX 9, Microsoft .NET 4 Framework, Visual C++ Redistributable 2005, Visual C++ Redistributable 2008, Visual C++ Redistributable 2010, and AMD CPU Drivers (XP Only/AMD Only)

Payday 2, an online multiplayer game, constantly has a slow and laggy feel as well, except this is on the lowest settings. According to the recommended specs, i should be able to run this game on the recommended settings.

Payday 2 specs:
OS: Windows XP SP3/Vista/Windows 7
Processor: 2.3 GHz Intel Quad Core Processor
Memory: 3 GB RAM
Graphics: NVIDIA GeForce GTX460/ATI Radeon HD 5850 (512MB minimum)
DirectX®: 9.0c
Hard Drive:13 GB HD space
Sound: DirectX 9.0c compatible

Lastly, a game that seems as though you could run on a laptop, Rocket League. Yes, even this game lags for me. It is an online multiplayer game, but I am pretty sure it is not my connection that is the issue because it runs fine... on it's lowest settings. Putting it on the recommended settings deems the game unplayable.

Rocket League specs:
OS: Windows Vista SP2 or Newer
Processor: 2.0+ GHz Quad core
Memory: 4 GB RAM
Graphics: Nvidia 260 series or ATI 5850 or better
DirectX: Version 9.0c
Network: Broadband Internet connection
Storage: 2 GB available space
Additional Notes: Gamepad or Controller Recommended

These games, as well as many others, I cannot run on high enough settings to enjoy. Some games (which I barely meet the minimum requirements for), run at 5 FPS. The only problem I could foresee is that all of these games all recommend Nvidia graphics cards, while I have an MSI. Please, any help at all would help greatly.

-Noah