Take a look at the Ghost Recon Wildlands PC Specs and Requirements for Minimum and Recommended that you will need to be able to run the game on the PC. As you can tell below the minimum requirements are for 6GB of Ram in which you do need a good computer to run the game with no problem or minimum graphic quality. Do take a look at below at the entire graphic cards that you will need to use and the setting and minimum requirements that you need to run the game.
MINIMUM:
OS: Windows 7 SP1, Windows 8.1, Windows 10 (64-bit versions only)
PROCESSOR: Intel Core i5-2400S @ 2.5 GHz or AMD FX-4320 @ 4 GHz or equivalent
VIDEO CARD: NVIDIA GeForce GTX 660/GTX 750Ti/GTX 950/GTX 1050 or AMD HD 7870/R9 270X/R9 370X/RX 460 (2GB VRAM with Shader Model 5.0 or better) – See supported List */**
SYSTEM RAM: 6GB
Resolution: 720p
Video Preset: Low
RECOMMENDED
OS: Windows 7 SP1, Windows 8.1, Windows 10 (64-bit versions only)
PROCESSOR: Intel Core i7-3770 @ 3.5 GHz or AMD FX-8350 @ 4 GHz
VIDEO CARD: NVIDIA GeForce GTX 970/GTX 1060 or AMD R9 290X/R9 390/RX 480 (4GB VRAM with Shader Model 5.0 or better) – See supported List */**
SYSTEM RAM: 8GB
Resolution: 1080p
Video Preset: High
*Supported NVIDIA cards at time of release:
• GeForce GTX600 series: (minimum) GeForce GTX 660 or better | (recommended) N/A
• GeForce GTX700 series: (minimum) GeForce GTX 750Ti or better | (recommended) N/A
• GeForce GTX900 series: (minimum) GeForce GTX 950 or better | (recommended) GeForce GTX 970 or better
• GeForce GTX10-Series: (minimum) any GeForce GTX 10 card | (recommended) GeForce GTX 1060 or better
**Supported AMD cards at time of release:
• Radeon HD7000 series: (minimum) Radeon HD 7870 or better | (recommended) none
• Radeon 200 series: (minimum) Radeon R9 270x or better | (recommended) Radeon R9 290X or better
• Radeon 300/Fury X series: (minimum) Radeon R9 370X or better | (recommended) Radeon R9 390 or better
• Radeon 400 series: (minimum) Radeon RX 460 or better | (recommended) Radeon RX 480 or better