passballtotucker
I have the exact same problem. It eventually went black then came back on with an "nvidia display driver stopped responding and recovered" message and the blurriness was gone.

passballtotucker
 There's also another minor issue. Whenever my computer wakes from sleep, a "G-sync display connected" message will keep popping up for a few minutes. 

shaunster
Hey guys,
 
I just wanted to add my 2 cents to conversation. I'm having the same issues with my new Acer XB270HU monitor and using a longer displayport cable.
 
I picked up a Startech 10 foot cable because the one included with the monitor is too short for me. When I use the longer cable I am unable to get any refresh rates above 85Hz. At first I thought the cable was faulty and I did some digging to see if Startech was a good brand. From what I read they seem to be pretty good. So after, I tried fooling around with the cable. Trying to wiggle it in and out on the back of the monitor and the video card and I noticed that sometimes when I plugged it in I could reach 100hz and sometimes only 85hz. I thought that was weird. And at the end of it I just figured the cable was broken and I had to get a new one. So back to the store I went. I told the computer guys my problem and they thought it was weird too. I asked them if cables are ever faulty and they said not really but it can happen. So what I did was I asked them to get me a new cable and I asked them to try it on one of their monitors. And just as a caveat, they didn't use an Acer XB270HU, just some random monitor they knew would reach 144hz. The guy plugged the new cable in and I watched him go to change the refresh rate and violla! There was 144hz. No issues. The new cable was fine, or so I thought. I came home... plugged the new cable in and nope, 85hz. What the hell??? 
 
So I'm wondering... a lot of you here are saying that 10 feet displayport cables are too long... but as I said, I watched the guy use a 10 foot cable and reach 144hz. Is it maybe because that monitor didn't have g-sync or something? Could there be too much information being passed through the cable when using an Acer XB270HU? High resolution, g-sync, etc? And why was it that I was able to sometimes reach 100hz but mostly only 85hz with the longer cable? It's pretty lame that cable length could be an issue with using displayport over 6 feet. 
 
Anyway, I'm glad I found this forum. I'm sure we'll fine an answer to these problems soon enough.
 
 
 
 
 

vegnar

shaunster
Hey guys,
 
I just wanted to add my 2 cents to conversation. I'm having the same issues with my new Acer XB270HU monitor and using a longer displayport cable.
 
I picked up a Startech 10 foot cable because the one included with the monitor is too short for me. When I use the longer cable I am unable to get any refresh rates above 85Hz. At first I thought the cable was faulty and I did some digging to see if Startech was a good brand. From what I read they seem to be pretty good. So after, I tried fooling around with the cable. Trying to wiggle it in and out on the back of the monitor and the video card and I noticed that sometimes when I plugged it in I could reach 100hz and sometimes only 85hz. I thought that was weird. And at the end of it I just figured the cable was broken and I had to get a new one. So back to the store I went. I told the computer guys my problem and they thought it was weird too. I asked them if cables are ever faulty and they said not really but it can happen. So what I did was I asked them to get me a new cable and I asked them to try it on one of their monitors. And just as a caveat, they didn't use an Acer XB270HU, just some random monitor they knew would reach 144hz. The guy plugged the new cable in and I watched him go to change the refresh rate and violla! There was 144hz. No issues. The new cable was fine, or so I thought. I came home... plugged the new cable in and nope, 85hz. What the hell??? 
 
So I'm wondering... a lot of you here are saying that 10 feet displayport cables are too long... but as I said, I watched the guy use a 10 foot cable and reach 144hz. Is it maybe because that monitor didn't have g-sync or something? Could there be too much information being passed through the cable when using an Acer XB270HU? High resolution, g-sync, etc? And why was it that I was able to sometimes reach 100hz but mostly only 85hz with the longer cable? It's pretty lame that cable length could be an issue with using displayport over 6 feet. 
 
Anyway, I'm glad I found this forum. I'm sure we'll fine an answer to these problems soon enough.
 
 
 
 
 

I should report that a new cable solved all my problems.   What's funny is that I had a DP cable that I received back in 2008 when I bought my Dell Ultrasharp, I had forgotten that I had that cable, the cable is 10" too so who knows, I'm happy my issue was fixed I can set 144 /gsync , not a single flicker since the new cable.
 
So just get a new cable and keep trying one until it's fixed.    Now the only thing is that if you run your refresh rate at 144 the gpu won't downclock but that is an issue with 144hz it seems.