I’m using suspend on my desktop running Manjaro KDE. To reduce power usage it goes to sleep after 15 minutes of inactivity and wakes up on mouse or keyboard input. Aside from some flaky kernel versions and after underclocking an unstable EXPO profile it’s pretty stable, even games continue to run after wakeup.

That monitor will hold it back. 1080p wouldn’t be bad if modern games run without TAA blur, but most games require it. Even a cheap 144hz IPS 1440p will give you a better experience.