How to increase ZRAM size on devices shipping with Android >=4.0?

I've recently got this new device which shipped with an Android >=4.0 Jelly Bean, and I was wondering how to increase zram on it because with the current parameters, it happens that even the foreground application goes out of memory and gets killed by the system. So you know, weird. You know, because I have other devices with the same 2 gigabytes of RAM which shipped with Android Jelly Bean and still run this same very recent Android version this new device runs on which I have never experienced this issue unless than when like I enable all types of tethering and run >10 applications in the background at the same time. I've heard it like supports something new called "Treble". I've also read now that there are Android Java applications whose entire purpose is just editing the zram parameters, which seems totally wild and inappropriate to me, so I was wondering if it was possible to do it properly without having to deal with such weird stuff.