Could there be any solutions that do not require an upgrade in hardware?
You RAM setup may not be ideal by "todays standars", but since Speccy indicates: "8.00GB
Dual-Channel DDR3 @ 665MHz (9-9-9-24)", and userbenchmark (which is not the best thing to test a system) also indicates "
Performing way above expectations", I would really wont worry about it.
What I would really try to do is take off as much load from the CPU and the RAM as I can: 1. clolse all unnecessary applications, 2. test if any other browser can be less demanding than chrome, 3. See if discord app is better or worst than discord web, 4. Keep open only the gaming client you are using (why have both STEAM and Origin open at the same time, you wont be playing two games at the same moment right?), 5. VPN client its another thing that can be closed if you are not using it, and 6. Think if you need both Samsung and Apple Mobile crap open too.
One thing you can do now, is find out if your 4 sticks of RAM are DDR3 1333MHz; DDR3 1600MHz or a Mix of those two. If you find out your RAM is DDR3 1600 MHz, then you may be able to squish some small extra performance by going to your BIOS and turning the XMP profile ON (Im telling you this because right now your RAM is been reported by Speccy as 667MHz, which means 667x2=1333MHz). Both your motherboard and CPU support DDR3 1600MHz.
Other than that, in the future you could be updating your system, and as I see it you have two paths to follow, one that I would not take, trying to get a used Core i7 and 2x8GB (identical sticks or a kit) of DDR3 1600MHz RAM. And the second path getting a brand new Mohterboard + CPU +RAM kit (this time it will be atleast a 2x8GB DDR4 3200MHz one).
I hope it helps, cheers.
PD, As I mention earlier, I would still take a look at the SSD and see if its connected to one of the white SATA ports on the motherboard.