It's actually not too bad at all as long as you stay out of the bitcoin batch of cards. The 1050ti is an excellent choice and can get you by, even in SC. It's not top of the line but it will work. I just picked one off Amazon new for $148. The last one I bought was just shy of $200 and is currently running my daughter's gaming rig and runs SC "decently". Just make sure you have no other bottlenecks...
I use two graphics cards at the moment and will be using it to power my two side screens. I am being forced to upgrade the previous 660ti that was at this task since it no longer shares drivers with my main card (as of this latest driver). My main screen runs off a gtx1080 that I was lucky to pick up in that narrow window between release and bitcoin price explosion.
It seems to me (and I could be wrong) that the new generation of video games aren't that much harder to render than slightly older games. They are just loading more and more into your view. By that I mean that a blade of grass is no more difficult to render on a 2018 game than it was on a 2010 game. Newer games just render thousands more blades of grass.
For example, I just upgraded my wife's two SLI 660ti's to a single gtx 1070 last year. There was little to no difference in performance. What made a huge difference though, was the year before when I upgraded her to a SSD (from a WD raptor disk drive) and 32gb of ram (up from 8gb). Like I said, I could be wrong. However, it seems to me that GPUs have hit a plateau and even older cards are still very valid.
Just my $0.02.
