maybe try to activate an xmp profile in your bios
if 2400 is the actual speed
I'd definitely suggest you skip the gpu upgrade and go with a new 5700X and a new kit of 3600 ddr4
you can recoup your money and if your ram really is @ 2400mhz you'll see an amazing boost while making your system relevent for years to come
2400 can still be sold for a reasonable price, well your ram is slow but you'll still get 30-50% of the price of a proper ram kit. Not only is your ram speed very low for ryzen its of poor quality. ballistics is junk frankly.
Dont get me wrong i'd buy it in a pinch but its low end with poor timings and very basic speeds.
Maybe get a 32GB kit of 4 sticks of 8GB @ 3600 ram or better. 2 sticks that are dual rank
Here is a video explaining the difference by someone with far more information than I can pretend to have
View: https://youtu.be/AGux0pANft0?t=79
regarding ram speed
here is a video of 3200 vs 3600 Mhz
View: https://www.youtube.com/watch?v=RnO2RxgJFBU
the difference is substantial in the video and going to 3600 from 2400 is a 50 % boost in ram speed.
In the video they explain how timings are actually more valuable than ram the ram speed difference of 400Mhz
If you don't cheap out ballistic style you'll have timings that beat your 2400mhz ram.
The frame rate isn't likely to scale to much beyond what you are seeing in the video, but if you keep your setup you wont see a frame rate boost to the same effect.
the 2070super is a great card for 144op if you don't mess with ray tracing as much.
It's really too bad for your friend but a cpu and ram upgrade is what you should be looking into exactly as
alexbirdie suggested.
You'll get a big boost in performance keep your entire system relevant and maybe gpu prices will come back from clown world where they were during the virus outbreak of unspecified origin.
At this time I can only suggest the gpu upgrade if you insist on ray tracing and even then you need new ram to see any improvement over your current card which is being held back by 2400mhz ram.
Here is zen 3 ram scaling. It's a much faster card than yours but look at the fps difference of up to 40 frames
View: https://youtu.be/Im0us9Oh82o?t=531
View: https://www.youtube.com/watch?v=AGux0pANft0
Im only spamming you because I just bought a gtx 1060 for 200 cdn 140-160 usd ... the money went to charity but dont overpay like i did you money isn't going to charity.\, but your 2070 super would be with no frame rate gains but you will get actual ray tracing performance without a fps drop.