Overlocked monitor, 60Hz Cap in Google Chrome

[e2rdo]

Hi!
I've successfully overclocked Dell P2714H from 60 to 80Hz on Display Port, and it's working fine in Windows, games and IE. But I can't get it working at 80hz in Google Chrome.
Overclocking test is working fine under IE, but in Chrome it says 60Hz and web browsing seem to be much smoother in IE than Chrome now. Is there anything I could do to increase frequency in Chrome?

Im using Windows 8.1 64 bit, Google Chrome 39.0.2171.95 m, IE 11.0.9600.17498.

My PC spec:
MSI Z97 Gaming 5
Intel i5 4690k
8GB DDR3 2133
Sapphire Radeon 6870 1G - drivers: 14.11.2 Beta

[Chief Blur Buster]

Hi!
I've successfully overclocked Dell P2714H from 60 to 80Hz on Display Port, and it's working fine in Windows, games and IE. But I can't get it working at 80hz in Google Chrome.
Overclocking test is working fine under IE, but in Chrome it says 60Hz and web browsing seem to be much smoother in IE than Chrome now. Is there anything I could do to increase frequency in Chrome?

Im using Windows 8.1 64 bit, Google Chrome 39.0.2171.95 m, IE 11.0.9600.17498.

Check www.testufo.com/browser.html and see if you've done all the recommendations.

Let me know!

[e2rdo]

I've tried everything earlier. When I check setting in chrome://gpu, everything looks ok apart from Canvas:

Graphics Feature Status
Canvas: Software only, hardware acceleration unavailable
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Force enabled
Rasterization: Hardware accelerated
Threaded Rasterization: Enabled
Video Decode: Hardware accelerated
Video Encode: Hardware accelerated
WebGL: Hardware accelerated

I've changed AMD drivers to official ones, instead of Beta. Also I tried on Chrome 40.0.2214.45 beta-m (64-bit) -same effect and --ignore-gpu-blacklist setting in chrome://flags/

I run out of ideas.