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144 Hz monitor only running on 60 Hz (AMD HD 8490)

Question asked by rohanp16 on May 20, 2018
Latest reply on May 22, 2018 by rohanp16

Hello everybody,

 

Recently we bought a ViewSonic XG 2530 gaming monitor in hopes of achieving higher frame rates for our experiments involving stimulus presentation but unfortunately I can't get a 144 Hz refresh rate.

 

Our desktop (Dell OptiPlex 9020 SFF) has a an AMD Radeon HD 8490 (along with a Intel HD 4600). The Windows 'Screen Resolution' is telling me that the monitor is at 144 Hz, but a test in our presentation software (PsychoPy) reports that a frame is refreshed every 16.7 ms, which is 60 Hz.

 

I am using DisplayPort cables, have the latest drivers installed (re-installed them as well), have switched Vertical Sync to 'Always Off', and made sure DisplayPort 1.1 is switched off - all of this to no avail.

 

Would really appreciate any thoughts and ideas!

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