Question Lowering the resolution does not increase fps, using a lower resolution monitor DOES!

[Ben422]

I'm just a casual gamer who doens't need to invest on a high-end GPU/monitor.

I've been using my GTX 1050 for two years and it's still more than enough for the type of games I play. I have two monitors: a 1080p 23" hp (which I use for my daily work) and an old 900p 19" samsung (which still shines when it comes to color quality and contrast). But I'm so confused about one thing. I have played quite a number of modern games (even a few 2019 titles) on the 900p monitor at a solid 60 fps. Of course, I can't do that with my 1080p monitor at a 1080p resolution and that's not what I want either. I wish I could use the 1080p monitor and just lower the resolustion so I wouldn't have to plug and unplug the cables all the time, but I would get a much worse performance than when using my 900p monitor. Why should there be any difference? Is there something wrong with my monitor or is there any graphic settings I'm not aware of?

Here are some games that run pretty smoothly on my 900p monitor at 50-60 fps, but run poorly on my 1080p monitor at 900p (or lower) resolution:
Darksiders 3
Resident Evil 2 Remake
The Witcher 3
Metro Exodus
Hellblade - Senuas Sacrifice

PC specs:

CPU: Intel Core i7-4790K @ 4GHz
RAM: 16 GB
GPU: NVidia GTX 1050 2GB
Monitor: HP P231 23" 1080p

 

[Ben422]

I think I found a solution. For some games, simply lowering the in-game resolution doesn't work. I should've lowered the resolution from windows display settings first. Hope it is helpful to somebody.