Just to add additional info on the topic here, it really seems the issue at the end comes to the fact either vsync is on or off.
A good test for that is the game Nioh. It's a game with vsync forced and 60 max fps. You can't edit any vsync option, there's none.
I tried to put VSync disabled w/ Disabled Enhanced Sync setting in the game profile in Radeon Software (instead of default Enabled Enhanced Sync) but it didn't do anything and the game was still heavily slowed down (i assume the game forces vsync in a way Radeon Software can't change that).
So the bad combo is a freesync monitor (whether enabled or not) + vsync on. This issue will occur 100% in this case. Screenshots:
Have you tried that following ways?
Run Windows Computer Managenet and then
Services and Applications > Services > Right Click "AMD External Events Utility" > Properties > Select Startup type to Disabled > Click Apply > Click OK > Restart the system
Did you follow these ways and make FreeSync works only with fullscreen mode?
This kind of FPS drop problem also exists with nVidia. However, with nVidia, this kind of problem can only be solved by activating GSYNC with the driver panel for only fullscreen mode. So the game screen switches to windowed mode with Steam alert and FPS becomes a drop. Your reason for having this problem with AMD is that... AMD display driver panel does not support FreeSync shutdown with only windowed mode for a game. Also, when a monitor that supports FreeSync is connected to the system, the driver consistency changes.
Of course, if you have the same problem like me, all this is true....
I didn't because as i said i play most of my games in windowed borderless. So doing the process you describe would prevent me from having freesync enabled most of the time.
I think i'd rather set myself offline on Steam chat to not be able to receive any message than having to disable freesync now i've it if i had to choose. It'd be the least annoying fix here.
Thanks again for the proposition of your fix though. I may try it at some point just for the purpose of trying it and see the result, but probably not for a longterm usage.
I agree you. I would like to share additional information. For example, to solve this problem with nVidia, going to the driver control panel and marking the GSYNC feature for the game for only fullscreen would solve the problem. When you turn off GSYNC feature from nVidia driver panel, display signal disappears and comes again. Then nVidia driver sees monitor firmware as if has no GSYNC. So nVidia doesn't just fix vertical hertz like AMD with adaptive sync supported monitors. Display signal is not lost when you disable FreeSync with AMD driver panel. AMD driver sees same monitor firmware supported by FreeSync, and is sometimes silly.
Considering another problem caused by what i assume is the FreeSync, i think i'll try what you said and see how it goes.
This another problem in question is that all the displays are like "frozen", only the mouse cursor is moving. The main screen with the game started is black but i can hear the sound of the game, and if i turn on the second screen, i see the task bar for instance but not reacting with clicks/hovers. It happened with Distance and Monster Hunter World so far. I had the idea yesterday to turn off freesync in the monitor settings menu instead of hard reboot once more. Displays were back again.
So maybe playing only in fullscreen mode with the freesync will help about this issue too. If not, i'll considering turning freesync completely off as it was with my old PC. But that may mean i'll have to use vsync, unless enhanced sync is that good (though i'll still need to limit fps either in-game or with RTSS).
I use FreeSync with my LG 4K panel fine. Driver notices it immediately and I have not seen any problems.
Depending on the game, the OSD shows anything from 30fps to 2400fps
I want to share additional information. When disabling FreeSync with the monitor menu, the signal disappears and comes again like nVidia driver response (without monitmr menu). So this may be fix this problem temporary.
I want to give an example. FPS drops with FreeSync when subtitles are added to Movies & TV application. Turning off FreeSync with the driver panel does not solve this problem bu turning off FreeSync with the monitor menu solves this problem. There are problems with the FreeSync driver. I reported this to AMD, but AMD does not put such problems into the problem class.
Yep i'd that in mind too that maybe displays came back when i turned off freesync in the monitor menu because it forced a "driver refresh" or something.
I'll see how it goes. For now i did what you said about "AMD External Events Utility" service being disabled by default, and i'll run games in fullscreen only and not in borderless.
Settings in Radeon Software being the default "games" preset ones. Latest driver (20.2.1).
For the few tests i did so far, no issues.