OMSI 2
PZM2850 Jun 19, 2023 @ 9:53am
Berlin X10 and BRT lagging after a period of not playing
Hi, I came back to OMSI 2 after a few weeks of not playing it.

Other maps (Spandau, London etc) work fine but for some reason, the FPS in the Berlin X10 and BRT maps are very low (below 10fps) with the bus jumping, and it is impossible to play those maps. Before, these 2 maps were running fine (at around 30fps).

I'm unable to diagnose the issue and that's why I'm here. I've reinstalled the game, and turned some settings down (which does help a bit, but it still lags massively, and the fact is that it wasn't like this before).

Thank you in advance if anybody is able to help diagnose the issue!
Last edited by PZM2850; Jun 19, 2023 @ 10:01am
Originally posted by zero:
Originally posted by PZM2850:
Originally posted by Bobby:
The EEP also has a backup of the replaced files in OMSI/Addon (not addon(s)
Yep, but there isn't any main_AI.osc file in it.

You're most likely right, I might have misremebered.
You should be able to just search for the main_AI.osc inside the OMSI directory.
However a potentially easier way to detect if the EEP is actually causing the problem would be to simply reinstall OMSI without it, provided your internet is fine with downloading OMSI *again*.
I'm not 100% sure if unticking the Enhanced Environment Pack in your DLC list is enough for OMSI to return to "true vanilla" but what I would do is uninstall OMSI completely, manually deleted the install-directory, uncheck any unwanted DLCs then reinstall and give it a quick integrity check for good measure.
If it runs without the EEP then there's your problem. :lunar2019piginablanket:
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Showing 1-15 of 22 comments
Bobby Jun 20, 2023 @ 10:43am 
Reapply the 4GB patch. Any update to the game -you reinstalled it- means you need to redo the patch. Also, go to the OMSI 2 options and go into the 'load/save' and check in there for an X10 preset as well as many others for your DLC.

Also, make sure it's not a windows update etc
Last edited by Bobby; Jun 20, 2023 @ 11:28am
PZM2850 Jun 20, 2023 @ 11:23pm 
Originally posted by Bobby:
Reapply the 4GB patch. Any update to the game -you reinstalled it- means you need to redo the patch. Also, go to the OMSI 2 options and go into the 'load/save' and check in there for an X10 preset as well as many others for your DLC.

Also, make sure it's not a windows update etc
I am aware of the need to reapply the 4GB patch basically every time I do something to the game.

I just tried the low graphics preset for the Berlin BRT map, it doesn't seem to make a difference.

I did wonder if it could be something to do with my windows, like the graphics driver or something, but I don't see anything wrong. Though I still suspect that it's something to do with this.

For the record, I am confident my laptop can run these 2 maps; it can run other intensive maps like London.

A new discovery though: upon checking the "show error messages" box and loading into both maps, 3-4 error messages pop up, all saying something about a Direct9 randomsound error (they're not fatal errors that will close the game). But I'm not sure if it means anything because I didn't check the "show error messages" box before, and I'm not sure if the errors were there from the very beginning.

Thanks for helping though.
Last edited by PZM2850; Jun 20, 2023 @ 11:25pm
PZM2850 Jun 20, 2023 @ 11:30pm 
On a side note, the issue happened after I bought some DLCs and launched the game, but it has also been weeks since I've touched OMSI 2. I'm not sure which factor is at play here...

Bremen-Nord, which was one of the maps I bought, also had the same horrible FPS issue with the Direct9 randomsound error messages.
Bobby Jun 21, 2023 @ 3:58am 
Originally posted by PZM2850:
On a side note, the issue happened after I bought some DLCs and launched the game, but it has also been weeks since I've touched OMSI 2. I'm not sure which factor is at play here...

Bremen-Nord, which was one of the maps I bought, also had the same horrible FPS issue with the Direct9 randomsound error messages.

Go into Omsi and the sound slider (1000 etc) drop it to 500 say, This alone is a known CPU hog (RealTek audio driver update it if you can https://www.realtek.com/en/component/zoo/category/pc-audio-codecs-high-definition-audio-codecs-software if it’s a generic onboard sound) and will affect frame rate. Mess about some more if you get an improvement.

I know this from buying the SP 400MMX. Playing London DLC I got nothing but repetitive, broken stutters of ‘the next…next.. stop is…………(nothing)’ and ridiculous frame rate down to 20s and a memory warning.

I looked at the manual and sure enough SP 400MMX had inc a custom sound config *just* for London. The trouble is it cut the passengers speech out and announcements. So I messed about with my own sound slider and reverb etc, and got it working *without* stutter of fps issues and didn’t use their custom config.

Try this as well
tiles 1,
side streets 0,
reflections either off or economy (mirrors) 256
fps try 40-50.
Particles off
Bump map etc all off.

Get this to the basics then work up when you get the fps stable. Then save it for that map - I do it with all my DLC now.

Also, sounds daft but it’s an experiment, load up X10 with another German bus Spandau MAN- not the default- and see if helps.

I do suspect it’s a windows update that’s knocked out your sound card (driver) so updating it -as above should get you back to normal. Hopefully
Last edited by Bobby; Jun 21, 2023 @ 5:30am
zero Jun 21, 2023 @ 9:40am 
I might have come across a solution to your problem though I currently can't test it myself.
The randomsound error seems to be related to a new feature introduced by a recent update of the Enhanced Environment Pack DLC, so it would make sense for you to only now notice degraded performance.

Try opening the main_AI.osc inside the Enhanced Environment Pack Addon folder and commenting out the line "10 random 0 max 10 min (S.L.Randomsound)".

Solution found here, should you need some more precise pointers:
https://reboot.omsi-webdisk.de/community/thread/2861-sammelthread-add-on-bremen-nord/?postID=208512#post208512

I was recently thinking about reinstalling OMSI, let me know if this solves your problem since I might have to do this myself :lunar2019piginablanket:
Bobby Jun 21, 2023 @ 10:58am 
I have had the Enhanced Environment DLC for a long time and haven’t had this issue, I play every weekend for probably going on 5-6 hours a time. So when was this update out?
The other thing that I make an issue of doing is turning off ‘online mode’ when using Bus Company Simulator as it gives you the GPS route. But being on the internet real-time can cause the game to be bogged down as it shows others online playing
zero Jun 21, 2023 @ 11:10am 
Originally posted by Bobby:
I have had the Enhanced Environment DLC for a long time and haven’t had this issue, I play every weekend for probably going on 5-6 hours a time. So when was this update out?

Tuesday, May 30th according to this:
https://store.steampowered.com/news/app/252530/view/3708196896032993848?l=english

Like I said: no clue if this is going to fix the OPs problem or not, I haven't played OMSI since Feb this year but I might aswell post a potential solution given the fact that I stumbled across it in the german part of the OMSI forum which some people understandably may never look at.
Bobby Jun 21, 2023 @ 11:19am 
I’ve also noticed that Bremen Nord has recently been updated. Coincidence ??
zero Jun 21, 2023 @ 11:43am 
You're right, I don't own that DLC but checked the update log and there are some comments complaining about bad FPS just like the OP.
Maybe it's a combination of the Bremen Nord update and the EEP?
Though why would X10 also run bad? Same traffic vehicles maybe?
I guess we shall find out once the OP finds some time to test some potential solutions.
Bobby Jun 21, 2023 @ 11:51am 
I don’t own it either, but I do own the Berlin X10 and have no issues and I have 3 or 4 top free maps from FellowsFilm and about 22 official DLC and they run perfect. I do have suspicion when he brought up the sound ‘error’ as a lot of people just allow windows updates to update everything inc sound and graphics card drivers, not saying the op did but you have to as you’ve helped as well, to cover all eventualities. The good thing about windows if it is an update he can roll it back and then try OMSI again. We wait with baited breath ;)
PZM2850 Jun 22, 2023 @ 9:05pm 
Originally posted by zero:
I might have come across a solution to your problem though I currently can't test it myself.
The randomsound error seems to be related to a new feature introduced by a recent update of the Enhanced Environment Pack DLC, so it would make sense for you to only now notice degraded performance.

Try opening the main_AI.osc inside the Enhanced Environment Pack Addon folder and commenting out the line "10 random 0 max 10 min (S.L.Randomsound)".

Solution found here, should you need some more precise pointers:
https://reboot.omsi-webdisk.de/community/thread/2861-sammelthread-add-on-bremen-nord/?postID=208512#post208512

I was recently thinking about reinstalling OMSI, let me know if this solves your problem since I might have to do this myself :lunar2019piginablanket:
Uh sorry, I don't get what is meant by inside the EEP Addon folder; I thought that addon just replaces default files wherever necessary and that there isn't a specific folder for the EEP. Do you have any idea?
PZM2850 Jun 22, 2023 @ 9:10pm 
Originally posted by Bobby:
Originally posted by PZM2850:
On a side note, the issue happened after I bought some DLCs and launched the game, but it has also been weeks since I've touched OMSI 2. I'm not sure which factor is at play here...

Bremen-Nord, which was one of the maps I bought, also had the same horrible FPS issue with the Direct9 randomsound error messages.

Go into Omsi and the sound slider (1000 etc) drop it to 500 say, This alone is a known CPU hog (RealTek audio driver update it if you can https://www.realtek.com/en/component/zoo/category/pc-audio-codecs-high-definition-audio-codecs-software if it’s a generic onboard sound) and will affect frame rate. Mess about some more if you get an improvement.

I know this from buying the SP 400MMX. Playing London DLC I got nothing but repetitive, broken stutters of ‘the next…next.. stop is…………(nothing)’ and ridiculous frame rate down to 20s and a memory warning.

I looked at the manual and sure enough SP 400MMX had inc a custom sound config *just* for London. The trouble is it cut the passengers speech out and announcements. So I messed about with my own sound slider and reverb etc, and got it working *without* stutter of fps issues and didn’t use their custom config.

Try this as well
tiles 1,
side streets 0,
reflections either off or economy (mirrors) 256
fps try 40-50.
Particles off
Bump map etc all off.

Get this to the basics then work up when you get the fps stable. Then save it for that map - I do it with all my DLC now.

Also, sounds daft but it’s an experiment, load up X10 with another German bus Spandau MAN- not the default- and see if helps.

I do suspect it’s a windows update that’s knocked out your sound card (driver) so updating it -as above should get you back to normal. Hopefully
In the meantime, I'm trying this suggestion of reinstalling my audio driver. Other than that, my sound slider has been set to 500 with no noticeable improvement.

I'd like to think my settings aren't an issue, as I have played X10 and BRT fine before, but reducing the settings definitely helps a lot (I'd like to think I found a sweet spot for X10, but for some reason BRT still isn't playing ball...). But I'll take note of your setting suggestions.

I have loaded up other buses (mostly mods such as the Scania Citywide and other DLC such as the MAN NLC), no noticeable difference.

I'll also uninstall the EEP if need be, and will let you guys know regarding any updates. Thanks.
Bobby Jun 22, 2023 @ 10:29pm 
The EEP also has a backup of the replaced files in OMSI/Addon (not addon(s)
PZM2850 Jun 23, 2023 @ 12:35am 
Originally posted by Bobby:
The EEP also has a backup of the replaced files in OMSI/Addon (not addon(s)
Yep, but there isn't any main_AI.osc file in it.
Last edited by PZM2850; Jun 23, 2023 @ 12:36am
PZM2850 Jun 23, 2023 @ 2:03am 
Unfortunately, re-installing the realtek driver did not make a noticeable difference with FPS and the error messages still pop up.
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Date Posted: Jun 19, 2023 @ 9:53am
Posts: 22