Some confusion here OP. I was NOT helping you, I was helping Sejbi8000 as you never posted a log until today.
Anyway, your browser is crashing & you have rendering lag, your GPU is overloaded.
Thread 2398: CrBrowserMain (Crashed)
21:37:35.327: Output 'multi-output': Number of lagged frames due to rendering lag/stalls: 118 (0.1%)
Having more than (1) Display, Game or Window capture in the same Scene can cause interference.
20:57:49.937: - scene 'Scene':
20:57:49.937: - source: 'Games' (game_capture)
20:57:49.937: - source: 'Starting soon' (browser_source)
20:57:49.937: - source: 'BRB' (browser_source)
20:57:49.937: - source: 'Display Capture' (monitor_capture)
20:57:49.937: - source: 'Starting new' (browser_source)
20:57:49.937: - source: 'Brb 1' (browser_source)
20:57:49.937: - source: 'Subs' (browser_source)
20:57:49.937: - source: 'Instagram' (game_capture)
20:57:49.937: - source: 'Game Capture' (game_capture)
20:57:49.937: - source: 'Now Playing' (browser_source)
Encode settings look OK but your bit-rate is way too low for 1080p
20:59:46.945: codec: H264
20:59:46.945: rate_control: CBR
20:59:46.945: bitrate: 2500
20:59:46.945: keyint: 120
20:59:46.945: preset: p5
20:59:46.945: tuning: hq
20:59:46.945: multipass: qres
20:59:46.945: profile: high
20:59:46.945: width: 1920
20:59:46.945: height: 1080
20:59:46.945: b-frames: 2
20:59:46.945: b-ref-mode: 0
20:59:46.945: lookahead: false (0 frames)
20:59:46.945: aq: true
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