I have RealGuitar...v3 as well, I think.
It has really not dated well. I've heard the newest update helps, but I still believe they are behind in 2018.
Shame, cause the strumming engine was excellent.
For strumming now, I prefer Acousticsamples Sunbird. It doesn't have the best overall tone, but the strumming engine is similar to RealGuitar (if I remember correctly).
For picking, I think there's better choices than Sunbird though.
I'm not sure if there's been an update to Orangetree samples guitars, but last I used it for strumming, it was rather cumbersome.
But their latest - Songwriter, does sound excellent though and would be my top choice for picking.