[Resolved] Very low unplayable FPS specific to the F4 in Persian gulf and Caucuses in 2D (non VR)

[Nitaihatr1]

Hello all,

I'm experiencing very low fps that's specific to the F4, as in, in a situation where I'm stable at around 80fps in the tomcat, the phantom does around 17fps, and drops even further down. In other situations it is slightly better, sometimes even reaching 60fps, however even in those situations the moment I start to look around fps drops to below 20fps. this seem to be worse on caucuses and worse when lower to the ground. This is happening also with the radar off or even when sitting in a cold dark cockpit. Again, same situation with the tomcat and I do just fine.

I have tried lowering my settings some, including my resolution, and haven't had much of an improvement.

I'm running a single monitor at 1920x1080. my rig is a ryzen3600xt\rtx2070super with 32gb ram. Dcs is installed in the C drive which is a 500gb m.2 with 75GB of free space. I'm on an up to date windows 10 22H2 with the latest nvidia game drivers. I will try to upload pictures of my graphics settings shortly. I have tried several missions in both Persian gulf and in caucuses, Persian gulf was slightly better. I'm also using opentrack alongside the game, but have made an effort to ensure nothing else is running that would be an issue.

I also tried to delete my fxo and metashaders folders and that seemed to be no help. I have just completed running a full repair of dcs and will be trying again, I'll grab screenshots of my settings while I'm at it.

This is obviously very frustrating as it makes the aircraft unplayable for me, but I understand that there can be issues in an early access release and I'm eager to provide as much data as I can to help solve this issue, I've seen some others complain of this on reddit aswell. Please advise on further steps to track down the issue.

Thanks!

 

Edit: attached a picture of my settings, note in the picture the fullscreen option is unchecked, this is only to allow me to take the picture, actual flying is done in full screen. Also note while lowering settings does help somewhat, checking six still means getting a major stuttering fit which if likened to a coughing fit would alarm even the heaviest of smokers. null

Edited May 24, 2024 by HB_Painter
Classification of Bugs and User reports

[Schmafuzius]

I have the same issue... performance of the F-4 is way worse than with any other module... maybe because EA and it will be improved over time... but I can't really fly the F-4 at the moment...

[BJ55]

Have you tried with cockpit global illumination disabled?

[Schmafuzius]

Just now, BJ55 said:

Have you tried with cockpit global illumination disabled?

Yeah I tried that and also disabled shadows because I thought those might be the reason (but they do look awesome...)

[Nitaihatr1]

i just tried with ALL settings turned to the absolute minimum, and at least that works ok, still some reduction in fps when looking around but it's playable, except that means also minimum draw distance and minimum cockpit res which makes the cockpit hard to read. i'm gonna start raising settings now one by one...

[BJ55]

Probably you rig is in the lower spec needed for the Phant, but since 1080 resolution is not so high... Best thing you cand do is bring up the task manager to see if some processes are overloading the pc.

[NSAdonis85]

6 hours ago, Nitaihatr1 said:

Hello all,

I'm experiencing very low fps that's specific to the F4, as in, in a situation where I'm stable at around 80fps in the tomcat, the phantom does around 17fps, and drops even further down. In other situations it is slightly better, sometimes even reaching 60fps, however even in those situations the moment I start to look around fps drops to below 20fps. this seem to be worse on caucuses and worse when lower to the ground. This is happening also with the radar off or even when sitting in a cold dark cockpit. Again, same situation with the tomcat and I do just fine.

I have tried lowering my settings some, including my resolution, and haven't had much of an improvement.

I'm running a single monitor at 1920x1080. my rig is a ryzen3600xt\rtx2070super with 32gb ram. Dcs is installed in the C drive which is a 500gb m.2 with 75GB of free space. I'm on an up to date windows 10 22H2 with the latest nvidia game drivers. I will try to upload pictures of my graphics settings shortly. I have tried several missions in both Persian gulf and in caucuses, Persian gulf was slightly better. I'm also using opentrack alongside the game, but have made an effort to ensure nothing else is running that would be an issue.

I also tried to delete my fxo and metashaders folders and that seemed to be no help. I have just completed running a full repair of dcs and will be trying again, I'll grab screenshots of my settings while I'm at it.

This is obviously very frustrating as it makes the aircraft unplayable for me, but I understand that there can be issues in an early access release and I'm eager to provide as much data as I can to help solve this issue, I've seen some others complain of this on reddit aswell. Please advise on further steps to track down the issue.

Thanks!

 

Edit: attached a picture of my settings, note in the picture the fullscreen option is unchecked, this is only to allow me to take the picture, actual flying is done in full screen. Also note while lowering settings does help somewhat, checking six still means getting a major stuttering fit which if likened to a coughing fit would alarm even the heaviest of smokers. null

 

My first question here is: do you in any way do the following:

1) change the default gpu driver profile
2) change the DCS GPU driver profile
3) have DCS added to antivirus exception (both game folder and saved games folder)

[BJ55]

This aircraft is really CPU heavy, even with lower simulation update rate ticked and radar in standby I can't go above 2x sim rate, with the other modules I can push from 4x to 10x depending on the situation.

[Nitaihatr1]

Ok everyone, pretty embarrassing one for me but I'd much prefer that to the module itself being a problem. BJ55 had the right idea. In my defense I haven't played much since that update came out but... I was accidentally using the non-multicore version of DCS. I forgot about needing to use two separate executables... I didn't think it was an issue on my side since other aircraft were doing just fine.

I still experience some FPS drop when looking around or when low to the ground but it's no longer that bad to make the game unplayable for the most part, and lowering settings helps.

Thank you all for trying though !

[HB_Painter]

Hey great to hear that and don't worry nothing to be embarassed about Most important thing is that you can now enjoy the Phantom with more FPS

[Chad Vader]

3 hours ago, Nitaihatr1 said:

Ok everyone, pretty embarrassing one for me but I'd much prefer that to the module itself being a problem. BJ55 had the right idea. In my defense I haven't played much since that update came out but... I was accidentally using the non-multicore version of DCS. I forgot about needing to use two separate executables... I didn't think it was an issue on my side since other aircraft were doing just fine.

I still experience some FPS drop when looking around or when low to the ground but it's no longer that bad to make the game unplayable for the most part, and lowering settings helps.

Thank you all for trying though !

I was of the opinion that you didnt need a separate exe for the MC version of DCS and this changed some time ago

[emc]

I think I got similar problem: https://forum.dcs.world/topic/349544-cpu-bound-with-only-20-30-fps-even-with-lowest-settings/
 

[emc]

10 hours ago, Nitaihatr1 said:

Ok everyone, pretty embarrassing one for me but I'd much prefer that to the module itself being a problem. BJ55 had the right idea. In my defense I haven't played much since that update came out but... I was accidentally using the non-multicore version of DCS. I forgot about needing to use two separate executables... I didn't think it was an issue on my side since other aircraft were doing just fine.

I still experience some FPS drop when looking around or when low to the ground but it's no longer that bad to make the game unplayable for the most part, and lowering settings helps.

Thank you all for trying though !

Lucky you... I use MT version... and funny thing no matter if I get middle graphics settings (which use in all other modules) or the lowest effect is the same just 20-30 FPS (i7 7700 32 GB RAM with GTX1080 8GB).....  All other modules I got ~90FPS

[Stele]

F-4 is noticeably resource intensive. Ive been testing my setup today trying to get the right settings for it but since I have a slightly lower end PC it's now a big indicator for me to upgrade. Other modules are fine on my PC

Two things I tried that I think are helping. In Special tab for the F-4 I enabled Lower Simulation Update and lowered the FFB gain to 0 since I don't use it.

[Kev2go]

I have the same issue. No other module was as remotely performance demanding Not as bad as op buy my frame rates really dip below 60s even into 30s when flying the f4e in a busy server. It's a combination of having a human wso and operating the radar that really kills the performance. Radar on standby and no human wso  I can get as high as 90s, in terms of frames

I'm wondering in my case if it isn't a vram limitation of my gpu ( 12gb but im not using vr)  since the individual of who I was flying with me didn't seem to have such problems. I have a better cpu but he has the better gpu. 12700k > 12600  , 3090ti > 3080.

 

Edited May 26, 2024 by Kev2go

[UN9249]

Same here. FPS realy makes it slide show. I don't know why. I even crashed few times when jester turned on his radar because of freezes. Also i found out that it also depends on airport. Shiraz or bandar abbas seem bad but departable. But al dhafra is worst. U take off normally, but after departin from 13L, right turn to 310, it start freezing like my PC from 10 years ago. Same mission. takin off from shiraz is ok. Also i can't play when jester put radar to 100 miles range. I got a frame in 3-5 seconds.

And i have rtx 3090, 24GB. 

[hornblower793]

Heatblur have already said that the radar is a known issue and they are working on it

[emc]

14 minutes ago, UN9249 said:

Same here. FPS realy makes it slide show. I don't know why. I even crashed few times when jester turned on his radar because of freezes. Also i found out that it also depends on airport. Shiraz or bandar abbas seem bad but departable. But al dhafra is worst. U take off normally, but after departin from 13L, right turn to 310, it start freezing like my PC from 10 years ago. Same mission. takin off from shiraz is ok. Also i can't play when jester put radar to 100 miles range. I got a frame in 3-5 seconds.

And i have rtx 3090, 24GB. 

RCtrl+Pause... see it is probably due to CPU high load...

[UN9249]

58 минут назад, emc сказал:

RCtrl+Pause... see it is probably due to CPU high load...

i didn t mod any cpu. all other modules work ok.