Instant replay for crossfire

GonGic1337

Hello,
I have been trying for a while now how to save for example my last minute and half clip from game when i hit sertent keybind (f.e. - alt + Num 2)

I have tried Shadow play instant feature ( pretty good but it always record in smaller resolution that I want my game is 1920 x 1080 but the saved clip is like 1600 x 1080 or smth like this its always smaller one.) so that's it

second program I tried is Plays tv but that program can't even recognize cf running so it doesnt record it. I tried fortnite and it worked but it was laggy anyway.

So it would be so sick u you guys could help me with the first option shadowplay and fix it or recommend me a program that you guys use.

NOTE: i just need program that will allow me to save f.e. a minute long clip when I hit keybind in game.
Thanks.