The 3700 looks a great chip but unfortunately I couldn't justify it atm.
I have just got a new 1440p monitor so with my rx480 I am definitely gpu limited and I think even if I upgraded to a 5700 or similar it would probably bottleneck a 2600 at this resolution. I think a 2600 and 5700 level card would be a reasonably balanced system for 1440p.
What gpu were you using with your 2600x to play ed in vr?