Screen Tearing when Mirroring HDTV with Monitor

[Jinx]

So, here's the deal. I just got a 32" HDTV off a friend. I want it mirrored with my regular monitor so I can easily go back and forth when gaming or watching movies. The problem is that for both video and games I tend to get some screen tearing on the HDTV (but not the monitor).

The monitor is a 27" 1080p Viewsonic, the HDTV is a 32" with a resolution of 1360x768 ("720p"). The TV also lists "1080i" as an option, or at least it takes that kind of input.

I know there are a lot of factors going on here - interlace vs progressive, different resolutions (and *slightly* off aspect ration with that 1360), and in-game settings like vsync. I've tried a lot of stuff but with no luck, mostly tinkering with different vsync settings. What's odd is that some games seem fine (Dirt Showdown) but others have real issues (Enslaved, Oceanhorn). Sometimes running the game at 1360x768 helps, but not always. And games look much better at 1080p even if that isn't the native resolution... some also look washed out at the lower resolution, no clue why there.

Any ideas on how to get rid of this tearing, ideally while still just mirroring the monitors and keeping the higher resolution?

Specs and relevant info:

Monitors are set to "Multiple Monitors" and "Duplicate Displays" under the Screen Resolution setting in Windows 7. Haven't messed my with the Nvidia control panel.

Phenom II x6 1090T
GTX 760 4GB
16GB DDR3
250GB SSD
Windows 7 64-bit
347.88 Nvidia Driver

Samsung LN32C350 HDTV[www.samsung.com]
using Generic PnP Monitor driver (no specific driver available)
32" 1360x768 native resolution (per Nvidia control panel)

Viewsonic VX2703 series Monitor (27" 1080p)

HDTV is using HDMI, Monitor is using DVI.

[˜lokkandload˜™]

I'd guess it was a resolution or refresh rate issue with the GPU and what the TV can accept.

[rotNdude]

You may want to try this

http://www.samsung.com/us/support/answer/ANS00032455/231524/LN32C350D1D

[Jinx]

Game Mode is activated, rotNdude. That was the first thing I did when I got the TV, totally forgot to mention it.

Dirt, that's what I figure, just hoping for some workaround. Otherwise it will be a lot of inconvenience swapping monitors etc. just to play a game on one or the other. (the HDTV is by my bed and I'm using it for controller-oriented stuff where I don't want to sit in my computer chair.

[˜lokkandload˜™]

tried using the TV as just a primary monitor by itself to see if tearing is still occurring?

[Jinx]

If it's just the TV, the regular monitor totally disabled, things seem to work fine. But that's a lot of annoyance to totally disable one to use the other.

I thought running games at 1360x768 would help things, since that's the monitor's native res, but no luck. Still tears. And even if that worked, it wouldn't help watching Amazon Instant Video since that tears.

I don't get why Dirt Showdown is fine, though. Maybe it's tearing but it's so small I'm not seeing it? Or something with hour it syncs frames?

Oh, and I noticed that the monitor says it's at 1080@30Hz when it's 1080, but @60 when it's at the lower res.

Actually, here's another question. Anyone know a way to make my video card downscale the HDTV from 1080p to 1360x768p. Like, output the smaller res signal to the TV so it wouldn't do the 1080i crap and/or use its own scaler?

[Jinx]

Looks like the easiest thing is to simply swap which screen Windows is using. Only takes a couple seconds, doesn't mess with my icons (since the TV takes the 1080 input as well), doesn't cap me at 30fps, and doesn't have screen tearing. Thanks for the replies, guess this is the best way for now :)