So yesterday I solved the problem I had with obs when using the netduma r1.
So basically obs was dropping/loosing frames every 30 seconds so my stream lagged every 30 seconds for its viewers. It seems a feature called low latency mode interferes with the netduma all you have to do is go to the options section of obs and go to advanced options. there you will see a network section make sure you have everything unchecked there.
If you have it off already you should not have any problems.
here a picture off how it should be!
Sans titre2.png 27.43KB 3 downloads
obs was set to french language sorry for that I hope those who need this will still find it =)
greetings from switzerland =)