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I have an issue that seemed to come out of nowhere a few months ago. Maxwell Studio had been working fine for the past year but a couple months ago the viewport started getting SUPER sluggish when I would have two viewport windows open. Probabally around 2 fps (yes, Two) when trying to rotate around in wireframe mode. If I close one of the viewports it works fine. No clue where this is coming from.

I updated my video card this week thinking it might have seen it's last legs but that has not fixed the problem. Updated drivers for everything. Anybody else run into this issue?

Hardware:

-Asus P5Q Mobo
-Intel Q6600 2.44 proc
-Sapphire ATI Radeon 4850x2 2gigs of memory (that card is the dual
GPU on a single card)
-4 gigs OCZ ram
-Windows Vista 64

It definitely shouldn't be a hardware issue, so I don't know what is up.

I considered reinstalling maxwell but am a bit scared to do that. I'm worried that my old scenes will end up having issues if I completely unintsall.

The same to me.

In my case, it's ok when I use radeon x800

but when after upgrade to hd3850, the mxst viewport has many problem.

1. super sluggish viewport when open two viewport like you

2. can't show the shaded mode.

So I doesn't use it anymore.

that's not good to hear that you had the same issues too!

As a point to note, I had an evga Nvidia 7900 GTO prior to my new radeon and had the same issues with that card. Although, with that card I am not sure if closing one viewport down fixed the problem or not...I can't remember. I know for sure with 2 viewports it had the same crappy slowdown.

same problem here...
( Ati Radeon x1950xt / win xp x64 )
i can't select anything in the viewport or i get a break of half a minute... shaded or wireframe view makes no difference.

Does reinstalling Maxwell cause any weird issues with any materials of older scenes? I have my material library backed up so i'll have all of the texture files and saved materials and everything.

If it doesn't do anything weird I'll definitely try reinstalling because at one point it used to work well for me...Maybe the reinstall will help?

An uninstall will not change anything to your current mxs or mxm files so it's ok. Do you have any other applications running at the same time that also use OpenGL? Does turning on/off vertex buffers in the Studio prefs change anything?

just reinstalled it and nothing changed sigh

do you guys know where I can get the contact info for Next Limit so I can speak to somebody? I most definitely did not spend $1,000 to recieve a faulty product and I am getting quite frustrated with this bug right now.

Do you use dual monitors?

no, it's only a single monitor. 21 inch dell. 1600x1200

Tried a clean reinstall of Vista today, but that did not help anything unfortunatly

As Bubbaloo hinted at, if you have two monitors and you open mxst from the 'second' monitor (i.e. double click on the icon on the 2nd monitor) the viewport will be very, very slow. Move the icon to the 'first' monitor and open it from there - this should sort it out. If you've only got one monitor - don't know!

Run msconfig, do a selective startup and try running MXST. Maybe it is a new process that is interfering with your viewport performance. I'm just grasping at air here, but that's what I would do...

Does turning on/off vertex buffers in Studio prefs change anything?

tried the vertex buffers, doing a selective startup (also tried diagnostic startup) and I don't have a second monitor. I double check to make sure vista didn't think my main monitor is my second monitor, or something weird like that.

Nothing fixed it yet Thanks for the continuing input guys.