Lagging GTKRadiant camera

[olli3]

Hello--
I had a really bad problem with GTKRadiant, not to long ago. Ever since it started working, the camera has been lagging REALLY bad.
If there is any way to fix it, that would be highly appreciated.

[olli3]

Accually, the whole program is lagging REALLY badly to the point where it is almost unusable.

[maz0r]

Running Vista or even Windows 7?

[olli3]

I am running Windows 7.

[obsidian]

Hardware specs?

[monaster]

Could be a problem with your in-radiant settings (using or not using "nearest midmap" settings and so on, most of this can be changed under "preferences"; also, if your map grows pretty large (lot of brushes, patches, clips etc), the editor starts lagging easily if your hardware specifications obsidian is asking for are not overwhelming. Boy, did I have troubles with my 1st map on a 2GHz 512RAM!

[$NulL]

One setting a lot of people haven't found is that disabling the 'update XY views on camera move' setting in preferances improves the camera performance significantly because it doesnt redraw the orthographic views everytime the camera view updates.

[maz0r]

Try running GTKRadiant in WinXP-Compatibility-Mode while also disabling Aero.

[monaster]

By the way, speaking of GTKRadiant settings: I've reinstalled GTKRadiant 1.5.0 (seems to be Spog's build what I had downloaded) because I changed to another computer for mapping and suddenly all the "select" features are gone. Select inside, select touching and so on. At least the two mentioned (inside and touching) were available in my former 1.5.0 installation (which lacked a few other features on its own part but whatever).
Interestingly editing the shortcuts.ini by adding "SelectInside=" as well as "SelectTouching=" didn't help much as my edits are set back as soon as I start up GTK 1.5.0. I also looked into several dirs and found the icons for all the select features are indeed existing inside the "bitmaps" dir. But they don't show up inside the editor itself. Is there anyone with a solution at hand? Or maybe someone knows about the "perfect" 1.5.0 build with all plugins already included (I have zero at the moment) and nearly as many features as 1.2.1 had back in the days?
Oh and if I should have made up a new thread, I apologize (just thought my problem somehow fits to this topic here), in that case just tell me and I'll fix it.
EDIT: Spelling mistake corrected.

[olli3]

Well, thanks for all the help. As maz0r said, I played around with the compatibility settings, and it just suddenly had a great FPS boost and EVERYTHING goes 20x faster than before. Again, thank you guys for all the help!