Hi and welcome to Arturia forums.
Very short.
A Gamer PC can be fine. But while gamer computers often put lots of weight on the graphic cards performance, then a computer for PC put more weight on the CPU performance. A thing like a high CPU base clock rate/ speed (
without turboboost and alike) pr core is very important.
Also the soundcard is important. I'm for example not sure you will get good enough performance using Windows own drivers and the standard build in soundcard. You can try.
The soundcard and it's drivers performance is important for latency. I for example use a external soundcard with ASIO drivers. Some use more exspensive PCI soundcards.
Also the sound you hear while you play your instruments depend on the quality of your soundcard. But that does speakers, headphones and other things too. You have to find out, what's good enough for your needs.
A good soundcard with good fast drivers can reduce latency issues.
The more instruments you use the more it can require of your systems performance. But that depend on other factors too.
You can start with Arturias manuals to set up your standalone applications. Manuals can be downloaded here:
https://www.arturia.com/support/updates&manualsLook for the section: "Audio and MIDI settings".
(But also read other parts to get started. Also read your keyboards manual.)To get low latency you should not have a too high buffer. You can start with 512 samples. For me that's too high. The lower you set the buffer, the more it demand of your CPU, but you will get lower latency.
The higher you set the samplerate the more it demand of your CPU. Many use 24 bit and 44100 or 48000 Hz samplerate, and you can start with that. Some use 16 bit 44100 Hz only. Some use higher settings of bit and/ or samplerate.
If you overload your CPU somehow, then you will hear crackles and perhaps exsperience sound stops, as a result of latency issues because your CPU can't mange the load you put on it. Then the load put on the CPU needs to be less somehow. You get issues if only one core is overloaded, and thats why the CPU base clock rate/speed is very important.
You can find many articles about this topic on the web.
All of this can require you read more about it to get an idea about what the different part does and such. But perhaps this is enough, at least as a start.
I hope this helps. Have fun.