I've been doing some testing as of late with 9.7.1 and also the 9.7.2 beta to try and resolve my issue. The problem is that when I enable a 4th monitor in the Monitor Config Display Fusion just locks my PC up 100% with out fail. I tend to toggle monitors around depending what I'm doing with shortcuts though with these version I'm now unable to do so, it will allow me to change 3 of them (any at random) though adding a 4th causes a total lock up. Though if I go into windows to enable/disable a 4th monitor it works just fine.

Luckily! as I'm using the steam version I'm still able to roll back to 9.7 where everything fully works though once I'm, forced to use 9.7.1 via steam the software will no longer be any use due to this bug. I even tried the 9.7.2 beta and it still had the same effect.

Could some advice be given on how/what can fix this issue? or what information one would need to investigate. As much as I adore the product if this is going to be happening with future version It's going to be an issue.

I've also attached the DisplayFusion.log & DebugInfo.txt in case they are some use for the Dev's I've also added two videos that I've uploaded to youtube to show the examples. (Hope this helps with investigating )

9.7 = https://www.youtube.com/watch?v=YZhq90mY5XQ

9.7.1 = https://www.youtube.com/watch?v=HkS9Vq_43Pk

9.7.2 = (Happens the same as 9.7.1)

Hello Owen,

It only happens when it 3>4 If you do 1>2 or 1>3 etc any other combination is just fine

It doesn't matter which monitor is the 4th as originally when I first found it crashing it was another monitor. Though I did test it with other monitor configs as the "4th" and it happened.

I find it rather strange indeed as 9.7 works fine just anything after doesn't.

Even if I do it via windows it works perfectly fine. It just seems to be with 9.7+.

One thing I did find strange though was that when I tested it again today I had music in the background which was still running even when it all "locked" up. So it's almost as if everything locks up but perhaps something is still running in the background, as normally a full system lock would cause music or sound to stop but this doesn't. Yet the only way to get things running again is to force the PC off as nothing responds.

I've actually just done a little more testing there to see if it actually ever recovers from the "lockup" and it seems if I leave it for about two minutes it does seem to recover, though usually it takes a second or two. So I do find it strange that it takes over a minute or two to enable a 4th monitor, when the rest are instantaneous. Though despite the sound still playing when it "locks" up it must be freezing something as I even tried to use my media keys on my keyboard and they no longer work till things come back, I also have a stream deck that doesn't respond during this minute or two.

Hello Again,

Thanks for taking the time to look into this, I've attached the zip file that it produced I enabled the 4th monitor at about 05:20pm and the system was frozen for about 1 minute. I did notice that it was also saying on the Monitor Configuration screen (Not Responding) before the lock up for 1 minute.

Hello,

Thanks again.

So after testing.

1. DisplayFusionSetup-9.7.1-Beta2 = Worked Fine

2. DisplayFusionSetup-9.7.1-Beta5 = Crashed

3. DisplayFusionSetup-9.7.1-Beta9 = Crashed

Just to add I'd even been trying a few combinations of Nvidia drivers to see if for any strange reason it had something to do with them, but after trying a few with the same result it seems to be something in the software that isn't playing nice, though it seems Beta2 worked just fine.

If you need any further information do just thanks.

Again thanks for looking into this

Hello,

Beta 3 works fine

Beta 4 crashes, so it seems to be something in beta 4 onwards.

Thanks for looking into this again.

Just to add I see there is a recent update 9.8 I tried that also just to see if there was anything that could help in there, seems not sadly it still cashes.

Hello Owen,

Not a problem at all for the time being I've got access to the older version still and the beta ones you've provided via the links that work so it's not the end of the world but hopefully there is something that can be addressed in the future, it's more just my worry that if the older version become obsolete it could be an issue though do take your time on such

Once again truly thanks for your time looking into this it's been much appreciated and look forward to hearing what is found in the future.