60 vs 120 Hz / problem with HDMI 3D compatibility

[alphonz]

Hi,

I haven't played 3D since two years. Now I started again because of „Little Nightmares II“. And I must say LN II is pure 3D magic!
Nevertheless I have a problem. After a few peacuful Nightmare days and nights I got an error message:
"Current mode 1280x720@120 is not HDMI 3D compatible. Please try 1280x720@60 Hz or 2920x1080@24Hz."
Well, I play via "3d TV Play" (driver 425,31) using my Acer X1623H projector (Full HD). That means I need: 1280 x 720 pixels with 60 Hz (Don’t laugh! Form me it’s great )
But suddenly something(?) switched to 120 Hz and I don’t know how to switch back without totally reinstalling everything. (In "3D-fix-manager/Settings/Display Profiles" I can still see the 60 Hz. But it seems to get ignored?!

My suspicion: the trouble started when i wanted to play the game „Inside“ in 3D . Years ago it was another pure 3D magic game for me. I can’t get it working any more in 3D. And with that the 120 Hz trouble began…

Does anybody have an idea what to do?
Best wishes from Germany…

P.S.: A few days ago I bought "WRC4" at Steam for 0,99 Euro. There’s a direct possibility in the game to switch to 60 Hz and that works fine in 3D during this trouble.
 

[greg02]

Stating the obvious but did you go into Nvidia Control Panel on the resolution page and make sure your at 60hz?

[3DNovice]

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[alphonz]

Thanks for your answers!

@Greg: it seems that it doesn’t make any difference for any game which frequency is active in Nvidia Control Panel. Of course I can switch from 120 Hz/2D to 60 Hz 3D in the Panel. The result happens immediately in the moment of switching. But it has no consequence for the game a few minutes later!?

@3DNovice: interesting topic! I will study that. But probably(?) that will cause some new problems with the projector and the (non passive) shutter glasses…

Fort the moment I just want to get back to the point three days ago, where Little Nightmares II was perfect in 3D – without permanent game- or Win10-new installation.

Just for your info:
I have the same problem with a total new Win10 (21/2) and with an old Win10 (19/9) version on the same PC. (I use driver 425.31 via Losti's "3D-Vision Driver Changer". I use "3Dfix manager". The games are all from Steam.) The only difference I realized beetween old and new Win10 version: with the new version I have to repair the „permanent 3D-mode“-error with "3D-Vision Driver Changer" after restarting the PC. With the old version I don’t need to repair the driver. But the 120 Hz problem appears also after some time. (As I said: probably connected with the game „Inside“?)
And don’t forget: „WRC4“ still works in 3D because oft he 60Hz switch in the game!

[3DNovice]

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[alphonz]

Thank you! I tried CRU now. But LN II via 3Dfix manager seems to hijack the video resolution.
I get the same error "Current mode 1280x720@120 is not HDMI 3D compatible."
And afterwards I'm back at 120 Hz

[3DNovice]

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