$600.00

I'm looking for upgrade suggestions. I bought the Acer Nitro XV273K 4k 120hz in 2019 for $700. I am struggling to find a worthwhile upgrade that would cost me less than $800. I'm willing to compromise on 4k down to 1440p if the overall experience is worth while. I could spend up to $600-$800...

I am playing gta 4 and when i benchmark it shows Avg fps- 51.48 Cpu usage- 80% system memory usage- 82% system video memory -90% Monitor- 1366*768 All on max settings My specs-i3-2100 3.1ghz ram 4gb ddr3 gtx 650 1gb hard disk 500gb motherboard p8h61 mlx3 r2.0 psu frontech atx p4 can u tell...