I don't have BL, but here are my settings. You should be able to access the cam via IE browser (Edge is not recommended). Go to Video/Audio, it should bring up the main feed (it has a lower res option using /Streaming/Channels/102). You could try a bitrate type of constant, but I think that may be causing the frame drops.
Resolution: 1920*1080
Bitrate Type: Variable
Video Quality: Higher
Frame Rate: 20
Max Bit Rate: 4096
Max Avg Rate: 2048
Are you able to access the cam by its IP address (like any other cam)? BI recognizes the IP, but I can't access it directly in any browser.