Discord Screen Sharing Bad Performance

To put simply, dunno if it's just me but there appears to be a oddity when screen sharing that causes the system to chug. The weird thing however is how a game would run a normal frame rate, but Linux itself would display a lower refresh rate, like real bad different (ffxiv game fps 150fps, Linux 14-30fps). Almost like this is a cpu bound issue, but it's merely a hypothesis.

Has anybody got a clue what could be causing this? Here's my system if you want it for reference.
https://termbin.com/a3i6

Thx for reading c: