I suspect the graphics controllers installed with your card is to blame. All third party controllers conflict with AMD settings and controls.
Delete Asus Tweak and Fan controls. Disabling them does no good. Delete then clean install the AMD drivers. Clean Install AMD Graphics Drivers
Thank you for your answer.
I forgot to mention it, I have not Asus Tweak GPU and not FanSpeed on my PC.
And as I said before, I have uninstalled and reinstall correctly the latest driver of my video card by following this procedure: Clean Install AMD Graphics Drivers
Apart from Speccy and Hwmonitor uninstalled, I have no similar software.
Also I disabled onboard graphic (Intel HD graphics) on BIOS a few weeks ago.
What can I do next?
Trying to eliminate possible causes...Re-enable the Intel graphics. Go to Intel support, run their "Driver Search" program and check for updates. See if a update changes anything.
Have you changed anything in Wattman? Power Limit and 'Max' temperature are the only things to change...the rest left at default (automatic)
"Trying to eliminate possible causes...Re-enable the Intel graphics. Go to Intel support, run their "Driver Search" program and check for updates. See if a update changes anything."
Actually, the default setting for onboard graphic is set to "AUTO" so since I use AMD GPU as primary video card, Intel HD graphics is automatically disabled. Whatever I set to "AUTO" or to "Disabled" would change anything.
And no, enabling onboard graphic has not changed at all in my situation.
For Intel driver & software update, there's no new version detected so my PC is updated for drivers and softwares (including Intel Optane memory).
"Have you changed anything in Wattman? Power Limit and 'Max' temperature are the only things to change...the rest left at default (automatic)
That's exactly I did on AMD Radeon settings, I set the limit power to max (+50%) and let everything else at default (including temperature).
Okay, I think I finally figured out the problem.
It has been detected by gamers/users before the update 18.8.1 and AMD has taken it as a known issues => Radeon™ Software Adrenalin Edition 18.8.1 Release Notes | AMD
- Cursor or system lag may be observed on some system configurations when two or more displays are connected and one display is powered off.
- Some games may experience instability or stutter when playing with FRTC and Instant Replay enabled.
- Toggling performance metrics while gaming on a non-native display resolution may cause the game to scale incorrectly.
- Radeon WattMan memory and frequency sliders may not list correct minimum values.
- Upgrade Advisor may fail to show up in Radeon Settings.
- Radeon FreeSync may fail to enable when playing Monster Hunter™: World.
- Video profiles may not correctly apply on web browser video content.
But it's not fixed in the current driver 18.8.2 yet (we don't know why it's not mentionned as a known issue => Radeon™ Software Adrenalin Edition 18.8.2 Release Notes | AMD
In order to be sure of that however, I want some evidences from the AMD community if this problme has been resolved in the 18.8.2 version.
In any case, I don't be worry anymore on my PC because I was trying to uninstall any suspicious software (speccy, CPUID HwMonitor etc...) while this is not the cause.