Low fps in games with i5 6500

[manqka_bs]

So i recently bought a new rig.
Spec: Intel core i5 6500 3.2GHz
Gigabyte H110M-S2H
Zotac 750 Ti 2gb ddr5
Crucial 4gb 2133 ddr4
Rm650x + 80 gold

So my problem is when i play games i get weird fps drops/stuttering
I mainly bought it to play Rust, but i get 40 fps on low settings, is the ram the problem?
(planning on buying gigabyte 1050Ti 4gb)

 

[PaulieVideos]

Rust is very badly optimized game and you are being bottlenecked by only having 4 GB of ram. Rust is a game that made me upgrade from 8 GB ram to 16 GB since it has very high memory usage, we're talking 12 GB usage with Rust on. Get another stick of 4 GB ram at least, it will help in most games today.

 

[manqka_bs]

I have upgraded my ram to 8gb and changed my card to r9 270x 2gb and im getting arround 80 fps on Low settings, if i upgrade my ram to 12gb will i see fps boost or better performance?

 

[rgd1101]

MERGED QUESTION
Question from manqka_bs : "Weird fps drops/stuttering in games"

So i recently bought a new rig.
Spec: Intel core i5 6500 3.2GHz
Gigabyte H110M-S2H
Zotac 750 Ti 2gb ddr5
Crucial 4gb 2133 ddr4
Rm650x + 80 gold

So my problem is when i play games i get weird fps drops/stuttering
I mainly bought it to play Rust, but i get 40 fps on low settings, is the ram the problem?
(planning on buying gigabyte 1050Ti 4gb)

Your setup does not even meet the minimum requirements, unfortunately. The minimum requirements are:
CPU: i7-3770 (4cores/8threads) >>>>i5 6500 (4cores/4threads)
GPU: GTX670 >>>>>> GTX750ti (weaker)
RAM: 8GB >>>>>>4GB

The low frame rates are due to the weaker cpu and gpu. The stuttering probably due to insufficient ram

My friend uses same cpu and gpu and gets 90 fps on low settings, but he has more ram than me, is that the issue?

If you run out of RAM, the system uses your storage (which is so much slower even if it's SSD), so yeah, most probably

Rust uses a lot of ram, you need more than 4 GB.