New OpenVPN installer doesn't give you an option to install TAP only, and doesn't name it x86 or x64. Tried to reinstall it a few times yesterday, didn't work, Dolphin still gave an error, while Bridge was working fine. I searched for a x64 installer specifically as you said, and found one from 2014, it differs from a new one, and gives you an option for a TAP only install (new one doesn't). I've installed it, linked my connections for a new bridge (with the same method as with previous OpenVPN install), set my BBA to auto (DHCP) and it worked like a charm, on a first try.
Thank you, now it works just fine.
Here's the two different exe's.
Thank you, now it works just fine.

Here's the two different exe's.