Question FreeSync on a low end monitor working as it should?

[Dave3000]

I tested my mom's spare monitor which is an HP M22F monitor that has the FreeSync feature which under AMD Radeon Software under the Display category is says that the FreeSync range is 48-75 Hz for this monitor. However, I tested my PC on this monitor and in GZ DOOM (Vulkan renderer) the FreeSync seems to usually only kick in at 51-74 fps caps on this monitor and sometimes its FreeSync will kick in at 49 fps cap but that's a hit and miss and never kick in at a 48 fps. Is basic FreeSync, especially from a low-end monitor, working as it should? Should it always kick in at its advertised FreeSync range meaning on this monitor I should see no tearing or juddering at a constant 48 fps to a constant 75 fps assuming the frame rate stays between 48 and 75 fps even with VSync disabled? Also I read on the internet that if you want to use VRR, it is recommend to cap the frame rate around 3 Hz below the refresh rate. I'm not sure if this advice applies to the bottom spectrum of the VRR range as well but in the reverse direction, especially on a monitor with just basic FreeSync. So basically is it normal on this monitor's FreeSync feature to only kick in consistently between 51-74 fps and not the advertised 48-75Hz? I can understand it not kicking in at a capped 75 fps as the G.refresh rate in the AMD Radeon software is listed as 74.9725 Hz therefore not exactly in sync with 75 fps but I don't understand of why it won't kick in at a constant 49 or 50 fps sometimes. It's not that the system is not powerful enough to maintain 48 fps as when I uncap the frame rate it is much higher than that even when the FreeSync kicks out near it's bottom range of the FreeSync but inside the advertised FreeSync range.

 

[Iron Woode]

I am pretty sure you need to turn on adaptive sync in AMD's control panel and set windows refresh to whatever is needed that is available and enable vsync in the game in order for it to function correctly.

for example: set windows refresh to 75hz and turn on vsync in the game and it should allow 75 fps. You can set other values if you want.

 

[Dave3000]

FreeSync is turned on in the monitor's settings and in the AMD Radeon Software settings. Windows refresh rate is set to 75 Hz.

 

[Iron Woode]

FreeSync is turned on in the monitor's settings and in the AMD Radeon Software settings. Windows refresh rate is set to 75 Hz.

make sure vsync is enabled in the game to cap maximum framerates to 75 fps.

 

[Dave3000]

In Vulkan API rendering mode I tried with vsync on and that gets rid of the tearing the set 75 fps cap but it's pointless setting the cap to 75 fps if I'm going to turn on vsync for a 75Hz refresh rate. Also turning on vsync in GZ DOOM results in the frame rate limiter in GZ DOOM to be ignored, for example if I set the cap to 48 fps, it's still running at 75 fps if I enable vsync. I'm was just trying to test of the bottom range of the FreeSync is working as it should and that's why I mentioned setting to 48 fps. In OpenGL API rendering mode in GZ DOOM I still get juddering if capping the frame rate below 50 fps, so FreeSync does not seem to be kicking in at a set 48-49 fps cap despite the specifications listing 48 Hz as the bottom range of the FreeSync for this monitor according to AMD Radeon Software.

 

[Iron Woode]

In Vulkan API rendering mode I tried with vsync on and that gets rid of the tearing the set 75 fps cap but it's pointless setting the cap to 75 fps if I'm going to turn on vsync for a 75Hz refresh rate. Also turning on vsync in GZ DOOM results in the frame rate limiter in GZ DOOM to be ignored, for example if I set the cap to 48 fps, it's still running at 75 fps if I enable vsync. I'm was just trying to test of the bottom range of the FreeSync is working as it should and that's why I mentioned setting to 48 fps. In OpenGL API rendering mode in GZ DOOM I still get juddering if capping the frame rate below 50 fps, so FreeSync does not seem to be kicking in at a set 48-49 fps cap despite the specifications listing 48 Hz as the bottom range of the FreeSync for this monitor according to AMD Radeon Software.

I see. My monitor only goes as low as 50hz and I set it at 144hz. I have never tried it below 60hz so I have no idea.

Just curious, did you get an inf file for your monitor from the manufacturer? Usually they call it a "driver". Installing the inf file will give windows a better understanding of what the monitor can do. It may or may not help.

On a side note I still play Unreal Tournament 99 using a dx10 mod and it limits my framerate to 100 fps no matter what freesync wants.