hello i'm having the exact same issues as you i believe i have the exact same logs as you even.
https://i.imgur.com/OxaZF5W.png this is a pic of what it does for me if obs is in fullscreen its like obs is just confused and crashes and such but it shows audio just no video of any kind and if i try to close or anything obs just goes to not responding.
https://i.imgur.com/2ymiMzG.png and this is what happens when i try to click on anything after freezing
this is what i found from event viewer
Description
A problem caused this program to stop interacting with Windows.
Faulting Application Path: C:\Program Files (x86)\obs-studio\bin\64bit\obs64.exe
Problem signature
Problem Event Name: AppHangB1
Application Name: obs64.exe
Application Version: 0.0.0.0
Application Timestamp: 585e6fc4
Hang Signature: ec91
Hang Type: 134217728
OS Version: 10.0.14393.2.0.0.256.48
Locale ID: 1033
Additional Hang Signature 1: ec91793bf83ce228d9a86f4207a39f37
Additional Hang Signature 2: f776
Additional Hang Signature 3: f776597e4bd520d70094975704d391ea
Additional Hang Signature 4: ec91
Additional Hang Signature 5: ec91793bf83ce228d9a86f4207a39f37
Additional Hang Signature 6: f776
Additional Hang Signature 7: f776597e4bd520d70094975704d391ea