Xbox Stream stutters - GPU upgrade ok?


New Member
My Setup now is not the best:
i5-2500k | Gtx 1050ti | 16gb ddr3 RAM

the thing is, because i can not spend that much, i‘m not sure what i should upgrade first.
My thoughts are to upgrade the GPU first, because i use the new NVENC to stream and have room for my CPU to do the rest.
The Stream seems to be a bit inconsistent - 50/60fps on 1080p (even 720p50 is not that good)
Dropped frames? Yeah, about 2-4%
CPU usage? About 18-24%