Streaming output in xSplit and YT bad quality

Hello,

I was streaming last night Apex Legends, after not streaming for around 7-8 months, time in which I upgraded my system to Windows 11. While streaming, the video was really bad quality and skipping frames, in xsplit and on the Youtube Live. My settings were for 60 fps and FullHD (1920x1080) which worked perfectly fine the last time I streamed.

Internet speed is via cable, around 880-980 MB/s, with the upload and download being the same and a ping of around 3 ms.

Does anyone have any idea why would this happen?

Thanks!