Best settings for recording with 2 OBS instances

[Axe]

Hello!

I have been using two instances of OBS for a while now to record gameplay and webcam separately.
To have different settings I use profiles.
But I don't understand if the settings I'm using are correct, I wouldn't want to use too many resources unnecessarily.
Should the bitrate for gameplay and webcam be set the same?

This are my current settings:

GAMEPLAY / WEBCAM
mp4
VBR 50000 TO 75000
key interval 0
Preset quality
Profile hight
b-frame 2

I'm recording in FHD 60 fps both webcam and gameplay but also sometime using 4K for gameplay and same settings.

Are this settings good?
Do I have to decrease something? Obviously I would like the best possible quality without having huge files.

If i change webcam bitrate to VBR 10000 to 75000, it always recording in 10000 or so. So I assume I don't need 50,000 bitrates?

Thank you

 

[Axe]

I forgot to tell you that if I record with a high bitrate like 50000, then on premiere I export to 20000 bitrate for fhd and 40000 for 4K. The result on full hd is not the best. Is there too much difference between the recording and export bitrate? Plus Youtube still decreases the quality. Is it better to record directly with a lower bitrate?