I can play MW at the lowest settings and at 75% aspect ratio and have about 60-70 fps.
The thing is, I made a huge mistake when I bought this PC back in 2015. Because I bought a i7 - 6700K along with the 960. So my GPU have been bottlenecking for a long time.
Regarding the upgrade, my PSU is 650W and I have a ASUS Z170-e and 16GB Corsair Vengence 2667MHz, DDR4 ofc. And when upgrading, I will be having a triple monitor setup. In case that will make a difference in the end.
But I am able to wait for the RTX 3000 series, I'm just starting to get a big impatient.