you do not need to be logged in to the Administrator account on your computer to run OBS as administrator. you can simply right click on the link and select 'run as administrator' alternatively you can edit the shortcut to always run as administrator. doing so has no effect on your settings in OBS and nothing at all to do with profiles.
1. I didn't say log on as admin to RUNAS admin
2. as for no effect on OBS settings - that isn't always true - depends on whether local user account is admin using UAC (which is silly, near worthless/pointless, imo [shared with those with cyber-security expertise]), or better practice is standard user account with separate admin account. If the later, then (RUNAS) running OBS as Admin DOES involve a different user profile ... standard Windows OS practice since at least WinNT4 (90s), if not earlier (don't recall if same with NT3.5). In case you are unaware, when using RUNAS (command line or right-click) and run an APp in an alternate security context, that app will use the user profile associated with that account.
And, if dealing with rendering/encoding issues, then sometimes, you don't have a choice (which I acknowledged).. but running as admin should be a worst-case fallback option. It is a terrible practice to make it an up-front recommendation. And, from I've seen rarely truly required if one adjust other settings appropriately. In my experience, most folks on this forum who recommend running OBS as admin, are often speaking to technically unsophisticated users and fail to mention the caveats and risks associated (or, in your case, appear to not even understand the OS implications). so definitely NOT absolutely recommended (unless one prioritizes OBS output over all else, and user is okay with risking compromising the entire OS, and therefore any personal data on it. I've read of plenty of such folks that re-install the OS fresh up once a year or more.. and for some gamers, that may be fine due to piss-poor game code causing its own OS issues.. but again, such implications should be disclosed to folks when making the recommendation or it is irresponsible, from my perspective).
We may need to agree to disagree on running OBS as admin. Otherwise, I appreciate your volunteering your time assisting on this forum