You are running OBS 32 bits. Copy shortcut, edit it and hook to 64 bits OBS.
768p rescaled to 720p
CBR 2500 kbps Veryfast
04:02:22.982: Output 'simple_stream': Number of skipped frames due to encoding lag: 5623 (82.3%)
04:02:22.982: Output 'simple_stream': Number of lagged frames due to rendering lag/stalls: 242 (3.5%)
04:02:22.982: Output 'simple_stream': Number of dropped frames due to insufficient bandwidth/connection stalls: 644 (9.4%)
Previous 0.16.2 log:
768p rescaled to 614
Streaming 720p (so, rescaling AGAIN to diferent resolution in Output settings)
CBR 2000 Kbps Veryfast
13:59:42.187: Output 'adv_stream': Number of skipped frames due to encoding lag: 326 (2.3%)
After this
04:07:42.542: video settings reset:
04:07:42.542: base resolution: 1092x614
04:07:42.542: output resolution: 1280x720
WRONG!!!! Do not rescale upwards
Streaming 1092x614 (so, output seetings with rescaled checked)
614p CBR 2000 Kbps Veryfast
04:10:41.883: Output 'adv_stream': Number of skipped frames due to encoding lag: 4140 (79.5%)
04:10:41.883: Output 'adv_stream': Number of lagged frames due to rendering lag/stalls: 176 (3.4%)
04:10:41.884: Output 'adv_stream': Number of dropped frames due to insufficient bandwidth/connection stalls: 166 (3.2%)
After this
04:11:54.012: base resolution: 1092x614
04:11:54.012: output resolution: 1092x614
GOOD!
(I thin you leave Output rescaling unchecked -even checked I think it has no real effect in this case-)
04:14:28.115: Output 'adv_stream': Number of skipped frames due to encoding lag: 2331 (52.3%)
04:14:28.115: Output 'adv_stream': Number of lagged frames due to rendering lag/stalls: 105 (2.4%)
04:14:28.115: Output 'adv_stream': Number of dropped frames due to insufficient bandwidth/connection stalls: 77 (1.7%)
CBR 2000 superfast
After this
768p not rescaled Lanczos filter (I think it´s not used; in this case, although, people uses Bilinear) 25 FPS
CBR 2000 kbps Superfast
04:23:18.632: Output 'adv_stream': Number of skipped frames due to encoding lag: 1392 (64.9%)
04:23:18.632: Output 'adv_stream': Number of lagged frames due to rendering lag/stalls: 41 (1.9%)
After this
768p rescaled 614p Lanczos 25 FPS
CBR 1980 Kbps Superfast Tune:Film
04:28:36.965: Output 'adv_stream': Number of skipped frames due to encoding lag: 1881 (46.4%)
04:28:36.965: Output 'adv_stream': Number of lagged frames due to rendering lag/stalls: 91 (2.2%)
04:28:36.965: Output 'adv_stream': Number of dropped frames due to insufficient bandwidth/connection stalls: 52 (1.3%)
So, your sytems is clearly weak to encode realtime video.
Best approach could be:
Canvas 854x480
Rescale 854x480
Rescale filter Bilinear
25 FPS (or even 20 FPS)
Output settings:
Rescale unchecked
CBR
1800 KBps (to get a little better image, that resolution and FPS don´t need too much)
Preset Superfast or Ultrafast
EDIT:
Or repeat what you did in 0.16.2
Previous 0.16.2 log:
768p rescaled to 614
Streaming 720p (so, rescaling AGAIN to diferent resolution in Output settings)
CBR 2000 Kbps Veryfast
13:59:42.187: Output 'adv_stream': Number of skipped frames due to encoding lag: 326 (2.3%)