When selecting 700 image files and right-clicking them, the context menu takes 30 seconds to appear.
I realize that this may not be caused by DO12 (running beta 13), but since I've never encountered this I thought I'd report it in case it has to do with the image viewer.
Not seeing anything unusual in my context menu, i.e. these are all things I'm used to seeing, except "Cast to device" (a Win 10 thing) which I removed without improvement.
After adding these to Prefs / Advanced / ignore_context_menus, the debugger shows that I'm down to 1.65 seconds.
Fabulous troubleshooting tools!
No idea what those are but I don't think they'll be missed.
Windows Defender: {09A47860-11B0-4DA5-AFA5-26D86198A780}
Shell extensions for sharing: {f81e9010-6ea4-11ce-a7ff-00aa003ca9f6}
Encryption Context Menu: {A470F8CF-A1E8-4f65-8335-227475AA5C46}
Taskband Pin: {90AA3A4E-1CBA-4233-B8BB-535773D48449}
Start Menu Pin: {a2a9545d-a0c2-42b4-9708-a0b2badd77c8}
Previous Versions Property Page: {596AB062-B4D2-4215-9F74-E9109B0A8153}