An Optimus 720M is no better than an Intel video chip, and BOTH of them are WELL below the minimum for either of the Garden Warfare games, sorry!
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Display Devices
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Chip name: Intel(R) HD Graphics 4600
Manufacturer: Intel Corporation
Driver Attributes: Final Retail
Driver Date/Size: 11/20/2015 13:10:48, 24929600 bytes
WHQL Logo'd: Yes
Name: NVIDIA GeForce GT 720M
Plants vs. Zombies: GW2
MINIMUM
OS: Windows 7 64-bit/ Windows 8.1 64-bit/ Windows 10 64-bit
CPU: 3.20 GHz Intel i5 650/ 2.5 GHz AMD Phenom X4 9850
RAM: At least 4GB for Windows 7/ Windows 8.1/ Windows 10
Hard Drive: 20 GB
Video: NVIDIA GeForce GT 640/ AMD Radeon HD 5750 (driver conflicts)
DirectX: 11
Input: Keyboard and Mouse, Analogue Controller
Online Connection Requirements: 192 KBPS or faster internet connection
RECOMMENDED
OS: 64-bit Windows 10 or later
CPU: Intel i5 6600 or equivalent
RAM: At least 16GB RAM
Hard Drive: 40 GB
Video: NVIDIA GeForce GTX 970 4GB / AMD Radeon R9 290 4GB
DirectX: 11.1 Compatible video card or equivalent
Input: Keyboard and Mouse, Analogue Controller
Online Connection Requirements: 512 KBPS or faster internet connection