Is This CyberPowerPC Good for 1080p & 1440p Gaming?

I recently bought a CyberPowerPC that claims to handle 1080p and 1440p gaming well, but after trying it out, I’m not so sure. The build seemed solid online, and the specs looked good for my needs, but I’ve run into some issues. The frame rates aren’t as smooth as I expected in some demanding games, especially at 1440p. I’m wondering if I should keep it or consider upgrading certain parts.

Has anyone here used this model for high-res gaming? Should I stick with it or look for something else? Any advice or experiences would be really helpful before I make a decision to return or upgrade.