openBVE ridiculously low fps

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openBVE ridiculously low fps

Post by Dexter on Sat Aug 10, 2013 12:04 pm

Hello everyone,

I have tripped over an issue on my new PC - openBVE is running so slow! I mean, this computer has much more power than my previous one, yet still I am having approximately the same fps rate (+- 1) as on the previous one. Everything else is running much faster. Any ideas what the issue might be? I have tried more routes and I am switching off Windows Aero when playing. The compter Windows experience index is 7.3.
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Re: openBVE ridiculously low fps

Post by LabRatAndy on Sat Aug 10, 2013 1:46 pm

Usual suspects could be: graphics drivers with poor openGL implementation and/or options selected in  openbve that are not supported by your graphics card, or may be an older version of .net,but those are only guesses though.

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Re: openBVE ridiculously low fps

Post by Dexter on Sat Aug 10, 2013 5:27 pm

 Thank you for your tips, Andy. The GPU I have is Sapphire Radeon HD 6670 with 1GB DDR5. The driver I have is the latest official release by AMD, .NET version is 4.5. I am wondering if I should downgrade to 4.0. Can anyone tell me which version you guys are using?
As for the graphics - at work I have much weaker Radeon 4450 and still it gives me better fps (with less VRAM, less RAM in the PC and a comparable Core i5). Im am kinda desperate. What is running on DirectX is running like a charm... I can play FIFA 13 on FullHD and full detail without any signs of my PC suffocating.Crying or Very sad Crying or Very sad 

 
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Re: openBVE ridiculously low fps

Post by LabRatAndy on Sat Aug 10, 2013 9:48 pm

That makes my set up look pre-historic.
Thinking about it versions of .net usually exist side by side so it's unlikely to be that.
But it could be to do with the settings in openBVE, that your new graphics card doesn't fully support, like one of the anti-aliasing settings.

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Re: openBVE ridiculously low fps

Post by Dexter on Sun Aug 11, 2013 6:37 am

 Well, it sounds a bit strange that a newer card does not support something that an old does, but it might well happoen. These are the technologies that are openly spoken of as supported by the GPU:

Microsoft DirectX 11
Shader Model 5.0
OpenGL 4.1
AMD PowerPlay
AMD HD3D
AMD App Acceleration
Dolby TrueHD
DTS-HD Master Audio
Unified Video Decoder 3 (UVD 3)

Hm.scratch 
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Re: openBVE ridiculously low fps

Post by Northern Line on Sun Aug 11, 2013 9:48 am

Did you say 1GB DDR5? Maybe upgrading the ram to say 2x2GB DDR5
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Re: openBVE ridiculously low fps

Post by Dexter on Sun Aug 11, 2013 12:31 pm

 DDR5 does not exist for desktop computers. The hghest you can get is DDR3 with frequency over 2000 MHz
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Re: openBVE ridiculously low fps

Post by LabRatAndy on Sun Aug 11, 2013 4:58 pm

It does say that on AMD's web site that 16 x Anisotropic filtering is supported. I've a feeling it could be down to bugs in ATI/AMD drivers, they were well known for having issues with openGL a few years ago. I don't know what they're like now.
It could also be that openBVE's openGL bindings are  I believe 6 years old now it could also be that they way openBVE renders has become obsolescent and thus less efficient in newer hardware.

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Re: openBVE ridiculously low fps

Post by Dexter on Sun Aug 11, 2013 8:56 pm

I understand your point; the truth is, the GPU at work is older than the one I have here. Thus it might be better for the render...
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Re: openBVE ridiculously low fps

Post by buckysam on Mon Aug 12, 2013 8:29 pm

I'd start off by going into settings and checking the virtual paging settings (aka virtual RAM) and seeing if it set to the recommended setting. Increase that and see if that might help. Also try upgrading up to at least 4GB of RAM. My laptop used to have that until i upgraded to 8GB. It ran pretty smoothly on all high settings but it would depend on the route and train being used. Some routes and trains would drop the fps some but not a whole lot, it mainly happened in trains with 3D cabs.

Oh yeah, and just either lower or disable antianalising level if nothing above works.

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Re: openBVE ridiculously low fps

Post by Dexter on Tue Aug 13, 2013 11:02 am

Thank you, BuckySam.

as seen below in the passmark banner, I do have 8GB of RAM (DDR3). Antialiasing does not have any effect on the fps at all - "16" gives me the same fps as "off". Strange. I will have keep digging...
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Re: openBVE ridiculously low fps

Post by Dexter on Fri Sep 06, 2013 2:41 am

Well... I have tried everything possible and no progress has been made. I have more versions of .NET co-existing next to each other, new drivers... strangely enough, I can produce this... recorded on the fly, with Fifa running at full detail... if you are an Arsenal fan, do not watch the video. Very Happy 



Regarding the openBVE low fps, I am still clueless.scratch 
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Re: openBVE ridiculously low fps

Post by tof63 on Fri Sep 06, 2013 12:19 pm

Actually I am using 2 computers (one at home and another in the country house).

I can only say that openBVE runs much better (smoothly) with the older one fitted with 4GB ram and Windows 7 32 bit, rather then the newer fitted with 8GB ram and Windows 7 64 bit.
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Re: openBVE ridiculously low fps

Post by Quork on Fri Sep 06, 2013 2:33 pm

Gives me an idea... Try installing XP if you have the disk space. XP uses only 4GB of memory (of which 3GB for applications). Maybe OpenBVE isn't able to cope with the amount of RAM on your computer, due to some conflicts or so... Sounds crazy, but a crazy shot is still better than nothing...
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Re: openBVE ridiculously low fps

Post by graymac on Sat Sep 07, 2013 5:42 pm

I'm running openBVE on Win7 64bit  with 6Gb RAM & Intel Core 2 2.4Ghz processor and Radeon HD6450 graphics.
No problems encountered.
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Re: openBVE ridiculously low fps

Post by Quork on Sat Sep 07, 2013 6:00 pm

Many people do. But we checked all logical possibilities, time to do the real guessing. It's as good a guess as anything.
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Re: openBVE ridiculously low fps

Post by buckysam on Tue Oct 01, 2013 7:36 pm

I just remembered. If your still having problems and if you are on windows vista or 7, make sure you're running openbve as administrator and try running it in windows xp sp3 compatibility mode.

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Re: openBVE ridiculously low fps

Post by Dexter on Fri Oct 04, 2013 3:01 am

Guys, I might have found out what the problem is. The thing is I started using a lot of animated objects recently - even if they are not actually moving, it is very easy to compose a bunch of trees by simply adding a few csv files into an *.animated file. From my observations I have made the following assumption; the openBVE render actually checks the *.animated file over and over again to see if there is a condition and the action is to be performed. In other words, even if you use a simple "RotateXFormula" without any conditions, the animated file is (probably based on its extension) checked time and time again to verify if a state change / rotation / whatever is needed. This puts a lot of load on the GPU and CPU of the computer. I am going to make further research; I have a feeling this might be the way to go to solve the performance issues. Unfortunately this would mean that larger objects composed of for example a few trees etc. would have to be redesigned into a csv file, which is time consuming and rather annoying.scratch 
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Re: openBVE ridiculously low fps

Post by Quork on Fri Oct 04, 2013 3:11 pm

Hm... This wouldn't explain why other routes are slow as well on your PC. Also I'd have to recheck, but from what I remember from the documentation that is not the behaviour. You can check it out in the section about .animated files; Michelle did a great job of documenting what exactly the program does with the data.
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Re: openBVE ridiculously low fps

Post by BillEWS on Tue Oct 08, 2013 11:31 am

Dexter: Your OpenBVE settings are the same as mine, except for the Vertical Syncronisation setting. With it allowed I get frame rates of 60 but with it set at disabled I get frame rates in the 100's. Give that a ty and I hope it works. This works on both my PC and Laptop.

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Re: openBVE ridiculously low fps

Post by Quork on Tue Oct 08, 2013 12:12 pm

No, this hasn't anything to do with vertical synchronisation. Vertical synchronisation means the FPS are limited to the screen refresh rate, which is sensible; less CPU and GPU load. FPS of 100s are senseless; you still see only 60 images per second. On the other hand higher FPS means interference creating slight image stuttering. You should switch VS on. For Dex that's of no relevance; if the FPS are below the screen refresh rate, VS does exactly nothing.
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Re: openBVE ridiculously low fps

Post by BillEWS on Tue Oct 08, 2013 12:45 pm

Thanks for that information Quark. I don't know much about programming for OpenBVE and while understanding some of the parts that make up a computer, wouldn't know how one part may affect another or whatever. I'm surprised that Michelle didn't bring this up when we disussed this when getting my new PC and seeing such high frame rates when disabling VS.

My previous PC could never average more than between 30 & 40 fps. My new PC (Over a Year old now) gave a constant 60 fps from the start. As I say, it was from reading comments by Michelle on this subject that it was mentioned that switching off VS gave massively increased frame rates. Of course, I may have missed something and that Michelle may have made that point.

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Re: openBVE ridiculously low fps

Post by Quork on Tue Oct 08, 2013 1:20 pm

Virtual synchronisation isn't OpenBVE-specific, that's generally an option of most graphics calculated in real time; probably Michelle thus supposed you know what it means.
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Re: openBVE ridiculously low fps

Post by BillEWS on Wed Oct 09, 2013 3:49 pm

No problem Quork, I am aware of the situation now so that is now covered ,thanks for the replies.

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Re: openBVE ridiculously low fps

Post by Greater Anglia Metro on Mon Jan 13, 2014 9:44 pm

This was an issue with my ATI in aprox 2010(?). I stuck with 4 as a result, when I upgraded to 7 OpenBVE ran better than 4 did on XP! Never did work out what caused it.
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Re: openBVE ridiculously low fps

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