[SOLVED] Games are lagging with new setup, please Help

[SMH21]

I upgraded my PC recently, the specs are:
Motherboard: H510M S2H rev 1
GPU: GIGABYTE OC G1 GTX 1050 Ti 4GB
CPU: i3 10100f
RAM: 2 x Geil EVO Potenza 8GB DDR4 RAM 3200Mhz
PSU: MWE 650 White
and in a game like Strongholds Warlords, I'm barely getting 40~50 FPS on low settings with 1360x768 resolution, and Battlefield V is completely unplayable it runs
on 10 FPS!!! I've tried reinstalling the graphics driver multiple times
I've switched my RAM's slot, unplugged and replugged my GPU, didn't fix it
I'm actually so upset that I can't use the new setup properly, it's been 2 weeks now🙁
does anybody know how to fix this? please help

EDIT: I've tried reinstalling windows too, and btw I tried enabling XMP but my windows kept showing blue screen error, then I disabled it, and then I manually increased my RAM speed to 2666
I'm also facing another issue with my Monitor's sound as well, I thought that this might be somehow related to my current question, I asked that here, read for more details:

Question - My TV's sound (that I use as my computer's monitor) is completely noisy but it gets fixed after a few second, how to fix it?

I upgraded my setup last week, my previous setup was an H61M-E, i5 3570S, 12GB DDR3 RAM, ATX330 PSU, and now I got an H510M S2H rev 1, i3 10100f, 8GB DDR4 3200Mhz RAM (I'll be buying another 8GB RAM soon), MWE 650 White PSU, and my GPU is GTX 1050 Ti 4GB, and for the monitor, as I said in the...

forums.tomshardware.com

EDIT:
I had graphic driver version 466.77 installed, in Stronghold warlords game, the FPS was like 20~30

then I installed version 471.68, and without restarting my PC I launched the game and the fps was a little bit higher, something like +10 (not acceptable though, this is not good at all):

THEN, I decided to restart the PC hoping that the FPS would get even better, but it was less than before restarting:

 

[SMH21]

Does this gpu require an aux power connector?
Can you post a link to this gpu?

Different area.
Run a pass of crystal disk info and post a screen shot for each disk.

I ran another bench on my system and it said missing GPU & SSD, then I tried one more time, and now it says missing GPU :| I'll replug it again
here's the bench:
https://www.userbenchmark.com/UserRun/45883102

 

[Bob.B]

It only has one socket for the PCI E cable, I don't know much about this stuff, I just knew that I should connect the PCI E to my GPU, here's the link:
https://www.gigabyte.com/be/Graphics-Card/GV-N105TG1-GAMING-4GD/sp#sp

Reseat the pcie cable both ends if possible....test
If no help and there is a 2nd pcie cable or port on the psu try it.

Crystal disk info.
https://www.majorgeeks.com/files/details/crystaldiskinfo.html

 

[SMH21]

Reseat the pcie cable both ends if possible....test
If no help and there is a 2nd pcie cable or port on the psu try it.

Crystal disk info.
https://www.majorgeeks.com/files/details/crystaldiskinfo.html

I've just replugged my GPU and also switched the PCI-E cable, didn't fix it, but I noticed that replugging the GPU, affects the FPS somehow, now my fps is 20 instead of 40

 

[SMH21]

Reseat the pcie cable both ends if possible....test
If no help and there is a 2nd pcie cable or port on the psu try it.

Crystal disk info.
https://www.majorgeeks.com/files/details/crystaldiskinfo.html

Did you mean these screenshots?
I also installed the same game on my SSD, but it had no difference, same FPS, maybe a little bit higher on the SSD, but yeah, I tested the game on SSD with HDD unplugged and that had no difference either

 

[Bob.B]

Did you mean these screenshots?
I also installed the same game on my SSD, but it had no difference, same FPS, maybe a little bit higher on the SSD, but yeah, I tested the game on SSD with HDD unplugged and that had no difference either

That looks good.
Consider taking the pc to a service counter.
They have all kinds of parts they can swap back and forth to figure out what is wrong.