Need help on x264 (ryzen 2700x )

Sep 3, 2018
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So my settings rn are these.

CBR:40k bitrate
60 fps
32 samples
Preset: Very Fast
(1080p recording)
YU color 709 (partial)

Keyframes at 0 (people say to put it at 2 so i will later on)
then audio 320
profile: Main
Just wondering why my text is kind of blurry (it's small text)