Custom Resolution Utility (CRU)

[jarkid]

(12-17-2020 04:10 PM)ToastyX Wrote:  

(12-17-2020 11:28 AM)jarkid Wrote:  Could you please tell me
1. What's the probable reason that "LCD reduced" would make my screen to flicker?
2. Why does the default setting of 75 Hz use "LCD reduced" as I see in CRU? It's made by Windows or my monitor manufacturer?
Thanks a lot !!!

Your "good" timing parameters match "LCD native", not "LCD standard". The default timing parameters match "LCD standard", not "LCD reduced". The default timing parameters are set by the monitor's manufacturer in the monitor's EDID, which is what CRU shows. If the monitor can't handle the default timing parameters, then that's a monitor fault. It might be an issue with FreeSync not working correctly.

Dear ToastyX,

I appreciate you very much.

So my default timing parameters for 60 Hz is "LCD native", and the other(75 Hz) is "LCD standard".

Then could you figure out that

1. Why does the manufacturer use different timing parameters for 60/75 Hz? or in fact, the most common parameters for 75 Hz or higher refresh rates is "LCD standard"?
2. Why is "LCD native" 75Hz good compared to "LCD standard" 75Hz? Or is that because my video card can't handle "LCD Standard" 75hz well?

I turned off the FreeSync in the AMD software for the specified application, but the flickering had still existed. so I can't tell if that was caused by FreeSync.( My monitor's OSD menu doesn't have FreeSync, but it supports that in the spec.)