Is it worth upgrading a Dell Vostro 15-3568?

Hello everyone, I am using a Dell Vostro 15-3568 laptop. My specifications are:

1. Core I3 6006U @2.00 GHz (4 of the core i3 CPU appear in the Device Manager so maybe that means it is 4 cores or something)
2. 4 GB ddr4 RAM
3. Intel(R) HD Graphics 520
4. 480 GB Kingston SSD 

 My laptop is lagging a lot when playing games such as Roblox, Minecraft, and Rocket League, so will upgrading the RAM from 4 to 12 or 16 GB RAM (DDR4) affect the gaming quality and for coding Arduino?  I can't upgrade the CPU because it is soldered 😭. And I can't use an EGPU because apparently for Vostro laptops you need an external screen for it to work. 

Thanks!