At this point i'd say wait till release, it's only 2 1/2 weeks.
But if you want to investigate further, have you tried monitoring programs like "HWmonitor"? (
https://www.cpuid.com/softwares/hwmonitor.html) I alway use this to check my system if i experience any weirdness while playing. You can check loads and temps etc. of every component in your pc. In my experience it is better and easier to handle than windows built-in stuff.
At a glance i would say your CPU (Ryzen 5 six-core is the 3600, right? I have the same one and was wondering if your 5600 is a typo?) is bottlenecking with obs open at the same time.
