A:AnswerYou need to look up the requirements online for Payday2. The GPU in this PC is an older one and only 2gb, so if anything will be your limiting factor for playing games, that would be it.
A:AnswerNope not even close. You’d need a minimum of a 2060 but even that won’t be able to play every game you throw at it due to it have to render 2 screens at 1440p+ and at least at 60 FPS constantly so you don’t get sick. 30 series should be able to hand it very well if you can get you hands on one.
A:AnswerThis question is a little confusing. It comes with antennas you hook up to the motherboard, which lets you access WiFi internet. It doesn’t “come” with WiFi, as WiFi is just wireless internet. That comes from your internet router.
A:AnswerYes, nothing is proprietary, so you can add ram, change the GPU, change the cpu, etc. The included motherboard is a mini though, so you won’t be able to add a ton of new stuff to it. But it’s good enough to upgrade and change stuff around.