Your trying to do way too much with a weak computer:
12:47:38.660: Output 'adv_file_output': Number of lagged frames due to rendering lag/stalls: 449 (46.1%)
12:47:38.661: ==== Recording Stop ================================================
12:47:38.977: Video stopped, number of skipped frames due to encoding lag: 147/174 (84.5%)
Your R5 M430 GPU is an extremely slow GPU. Your HD 620 isn't that all much better. OBS is using HD 620.
So you got to turn down video game settings in Roblox that cause too much GPU usage like shadows, physics, graphics quailty.
12:44:07.082: Initializing D3D11...
12:44:07.083: Available Video Adapters:
12:44:07.123: Adapter 0: Intel(R) HD Graphics 620
12:44:07.123: Dedicated VRAM: 134217728
12:44:07.123: Shared VRAM: 4212660224
12:44:07.123: output 0: pos={0, 0}, size={1920, 1080}, attached=true
12:44:07.123: output 1: pos={1920, 0}, size={1920, 1080}, attached=true
12:44:07.124: Adapter 1: AMD Radeon (TM) R5 M430
12:44:07.124: Dedicated VRAM: 2138763264
12:44:07.124: Shared VRAM: 4212660224
12:44:07.128: Loading up D3D11 on adapter Intel(R) HD Graphics 620 (0)
12:44:07.351: D3D11 loaded successfully, feature level used: b000
Some additional things you can try:
1) Don't mix window, display, and game capture in the same scene. Use only one.
12:44:14.215: Loaded scenes:
12:44:14.215: - scene 'Scene':
12:44:14.293: - source: 'Window Capture' (window_capture) <---- use only one
12:44:14.293: - source: 'Display Capture' (monitor_capture) <---- use only one
12:44:14.293: - source: 'Color Source' (color_source)
12:44:14.293: - source: 'Color Source' (color_source)
12:44:14.293: - source: 'Image' (image_source)
2) Keep it simple. Use simple recording output and set recording quality to High Quality, Medium File Size.
3) Try to output in 1280x720 instead of 1920x1080 to reduce CPU/GPU processing. That will get you higher frame rates.
