Sign in to follow this  
Chapstick

Massive FPS difference in fullscreen vs. windowed.

Recommended Posts

I have a GTX 285 paired with an E6600 at 3.3ghz and have recently discovered that fullscreen mode produces much higher FPS than in windowed mode, almost twice as much. The experience is night and day but the problem is I prefer windowed mode so I can multitask and use other programs essential for flight simulator. Does anyone know if there's some setting or tweak that's holding back windowed mode? Thanks.-Alex

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

I run windowed mode myself, and have found that not allowing the FS window to touch the start menu bar gives me a dramatic increase in frame rate (in windowed mode). When running windowed mode, try grabbing the bottom of the FSX window, and drag it up a couple of pixels so it doesn't touch the start menu bar at the bottom of the screen, and see if that improves anything for you.Good luck. :)-George

Share this post


Link to post
Share on other sites
I have a GTX 285 paired with an E6600 at 3.3ghz and have recently discovered that fullscreen mode produces much higher FPS than in windowed mode, almost twice as much.
Are you sure they are both using the same screen resolution? When you put FS into full screen mode it uses the resolution set in its Options-Settings-display menu, not that set for Windows. If you've not changed it at all I expect FSX has automatically selected a lower resolution in order to boost performance. Here I get pretty much the same performance in either mode. the only real difference it the title bar at the top in maximised Windowed mode.RegardsPete

Share this post


Link to post
Share on other sites

It is a known issue when using Vista or Windows 7 that when running FS9 or FSX in windowed mode if the window touches the taskbar (as said above actually the start button) you will see a significant drop in FPS.You can drag the window up a bit or if using Vista you can either click auto hide taskbar or keep windows on top of taskbar. In Windows 7 you can only select auto hide taskbar. Any of those will return the lost FPS and still allow running in a maximized window.Todd

Share this post


Link to post
Share on other sites

Generally fps is higher in full screen than windowed.But the slowwer your pc the more youll notice the difference, i know cause i moved form 1.8Ghz dual core to 3.8 Ghz i7920.I always use windowed cause i undock all kinds of stuff to second screen, not possible in full screen.Infact ill never sim on one screen again, managing panels on single screen is too much hassle.

Share this post


Link to post
Share on other sites

The Vista and Win7 taskbars use shaders that run in competition with the shaders used in FSX, that's why the window should not touch the taskbar, apparently. Beyond that, though, there are several other hidden reasons why FSX works better in windowed vs. fullscreen. As mentioned, resolution may be one of them, but there are others. It almost seems to depend on the individual rig.I highly reccommend that all flight simmers try both modes for themselves, as this advice is very much personal. Me, I currently get the best out of windowed mode. Jeff ShylukSenior Staff ReviewerAVSIM

Share this post


Link to post
Share on other sites

It may be that those who see performance drop in going from full to windowed is cause thier desktop reoslution and fsx resolution are not the same.In my case fsx resolution is always set to same a windows.

Share this post


Link to post
Share on other sites

I hear ya man. When on vatsim I'm in windowed mode for sure. Sky vector is open, NACO charts, Squawkbox is up. Lots of windows open. Unfortunately I also have an issue with my mouse. If the cursor is displayed in the VC mode I have significantly LESS fps than if its off screen or over a 2D popup.

Share this post


Link to post
Share on other sites

Chapstick,Thanks for bringing this up. I have tested the difference between full screen and windowed a number of times, and there is always a major loss of FPS when in a window, even when it is significantly reduced in size. I wonder why some others find the opposite happens on their machines...interesting. :( Stephen

Share this post


Link to post
Share on other sites
Generally fps is higher in full screen than windowed.But the slowwer your pc the more youll notice the difference, i know cause i moved form 1.8Ghz dual core to 3.8 Ghz i7920.I always use windowed cause i undock all kinds of stuff to second screen, not possible in full screen.Infact ill never sim on one screen again, managing panels on single screen is too much hassle.
I always use full screen. And I can move any undockable panel to the second screen.

Share this post


Link to post
Share on other sites
I always use full screen. And I can move any undockable panel to the second screen.
Not a lot of difference between full screen and windowed for me (W7 x64).Make sure that the shortcut you use to run FSX has Disable Visual Themes checked, in the Compatibility tab.You know it's working because as soon as you run FSX, you get the Windows theme changes to the basic, and a there's pop-up saying visual themes have been deactivated. I know the Windows Aero theme in Vista and "7" can have an effect.Does this help?

Share this post


Link to post
Share on other sites
I wonder why some others find the opposite happens on their machines...interesting. :(
Must be a video card/driver thing. I get better performance in window mode on my current system, in the past the opposite has been true.

Share this post


Link to post
Share on other sites

Thanks for the help guys, the FPS between windowed and fullscreen is now equalized. Sheesh, for months I was running FSX at half the framerate I could've been... it feels like I got a free CPU upgrade. I wonder how many people gave up on FSX because they didn't know about this bug...-Alex

Share this post


Link to post
Share on other sites

I'm still curious if others have the mouse cursor problem. There's a few guys on the hardware forums that do, from what I've read.

Share this post


Link to post
Share on other sites
I'm still curious if others have the mouse cursor problem. There's a few guys on the hardware forums that do, from what I've read.
I tried to re-create it and I didn't get an FPS drop. -Alex

Share this post


Link to post
Share on other sites

Argh. It must be some combination of hardware, drivers, nHancer.... so pretty much anything is possible lol

Share this post


Link to post
Share on other sites
Not a lot of difference between full screen and windowed for me (W7 x64).Make sure that the shortcut you use to run FSX has Disable Visual Themes checked, in the Compatibility tab.You know it's working because as soon as you run FSX, you get the Windows theme changes to the basic, and a there's pop-up saying visual themes have been deactivated. I know the Windows Aero theme in Vista and "7" can have an effect.Does this help?
Actually it's "Disable Desktop Compilation" you're talking about and that turns off the Aero Desktop. For some people (myself included) the RealityXP WAAS units require "Disable Visual Themes" to be checked also. I'm running W7 x64 and I see no difference in FPS between full screen and windowed mode provided that the window isn't touching the taskbar. I have no issues with FPS with the mouse cursor displayed.Todd

Share this post


Link to post
Share on other sites
I always use full screen. And I can move any undockable panel to the second screen.
May I ask you when you use full screen, does the second screen decrease to a lower resolution ?My full screen resolution is 2560x1600 , my second screen switch from 1920 x 1080 to 1280 x 1024. No problem if I use both in windows mode.Jimmy

Share this post


Link to post
Share on other sites

Golly! I switched to windowed mode on a suggestion in some forum (I can't remember where) that I'd get an improvement in FPS - I did - so I hadn't considered going back to fullscreen mode because I got used to windowed mode.Thanks to this thread, I was curious enough to experiment again. I switched back to fullscreen mode and I have an average FPS increase of about 50%.My result is based on a five minute flight in an AS Twotter, on heading 110 from Bankstown YSBK, 1500ft AMSL over the western suburbs of Sydney and just past Botany Bay in the city's south; and I have FTX AU !I was lucky to hit 14fps before, but now I get to 24fps frequently. FSX is locked at 25fps. Go figure.Cheers and thanks to all here for helping make this a great FS forum in general.

Share this post


Link to post
Share on other sites

Sorry to revive this, but I have a strange problem: Going to full screen costs me 50% of my FPS. In windowed mode I get the ~30FPS I’m locked into in Nvidia Inspector (with FlyTampa Vienna, 737NGX, on the ground, ASN, full FTX package incl. openLC and REX clouds). Once I hit Alt+Return it drops to ~15FPS. Call me crazy but I would actually prefer fullscreen mode…

 

Tweaks I applied: I followed Kostas guide and applied the setting in Nvidia Inspector Ryan (from PMDG) suggested. Only difference: I have to run DX10 because DX9 simply does not work at all for me and never has (it always falls back to 1024x768 resolution whatever I do). VSync is off.

 

Any ideas? Thanks in advance!

 

EDIT: I think because of Performance mode my system doesn't show up so I'll post it here: i5-3570k@4,4, GTX780, 16GB RAM, everything FSX related on SSDs, 2560x1600 native res.

Share this post


Link to post
Share on other sites

I run in full screen mode and use a second older P4 computer for everything else...

Share this post


Link to post
Share on other sites

Well my point is that I get a 50% FPS drop when using full screen while everyone else seems to be experiencing the exact opposite.

Maybe I'm doing something wrong, but it doesn't feel right.

 

Anyway, as long as I get my quite stable 30FPS in windowed mode I'll pass on WideFS. Adding more networking usually creates more trouble in my experience.

But if I'm losing FPS in full screen because I screwed up something I'd like to know and fix it ^_^

Share this post


Link to post
Share on other sites

Well my point is that I get a 50% FPS drop when using full screen while everyone else seems to be experiencing the exact opposite.

Maybe I'm doing something wrong, but it doesn't feel right.

 

Anyway, as long as I get my quite stable 30FPS in windowed mode I'll pass on WideFS. Adding more networking usually creates more trouble in my experience.

But if I'm losing FPS in full screen because I screwed up something I'd like to know and fix it ^_^

 

+1 on my system. Never found the reason though.

 

Michael

Share this post


Link to post
Share on other sites

 

 


Well my point is that I get a 50% FPS drop when using full screen while everyone else seems to be experiencing the exact opposite.

 

You need to enable aero theme in windows 7.  

 

There are multiple ways of doing this but just to see if it works start FSX and load a flight.

Open the task manager and look for dwm.exe under the processes tab.

Highlight that process and select "end process".  

 

It will restart and you will have the aero theme as long as you didn't disable in the performance tab.

You should then be running full FPS.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this