Unstable FPS on current simulator

[lamhoangtung]

Hi. I'm trying to run the simulator provided in here

The problem is sometimes the simulator run very well on my computer with 60-70+ FPS, but almost other time it only staying bellow 30 FPS, which is very annoying and hard to work with.

Here is my computer spec:

• Dell G7-7588 with Ubuntu 18.04.3 LTS
• Intel® Core™ i7-8750H CPU (6 cores)
• 16 GB DDR4 RAM
• GeForce GTX 1050 Ti 4GB
• HDD only

Other small thing to note:

• I have a dedicated monitor hook up to my machine via an HDMI cable, it's only 1080p at 60Hz, same as the laptop screen.

Seem more than enough to run the simulator + some mild computation. But the simulator alone already seems bad ;(

Before asking for help, I had make sure the following things:

• Computer is plugged in and fully charged (Computer run on AC, not battery)
• Installed proper Nvidia Driver for my graphics cards, update all the software in my OS.

Here are some proof that my computer can run the simulator very fast:

=> 70.5 FPS

=> 67.8 FPS

=> 66.9 FPS

Please notice on the right side of the screen, I have 2 monitor program opened up: htop for CPU + RAM monitoring, nvtop for GPU monitoring. So, when the simulator are RUNNING well:

• CPU is at 10-20% utilization at each core
• 5-6GB of RAM
• GPU running arround 1700MHz with 50-65% utilization, GPU mem arround 3500MHz with ~2.1GB of VRAM

Here is when the simulator performing very slow:

=> 28.5 FPS, even when I just stand still

=> 19.7 FPS, too slow

=> 20.4 FPS

Let's take a look at the hardware monitor this time:

• CPU is at 10-20% utilization at each core
• 5-6GB of RAM\
• GPU running arround 1700MHz with 35-45% utilization, GPU mem arround 3500MHz with ~2.1GB of VRAM

My Conclusion

By looking at the hardware monitor in 2 cases, I don't see any hardware throttling at all, everything stay pretty much the same except when the simulator perform slowly, the GPU utilization is a bit smaller. Which indicating that's something is wrong with the software so that it can not utilize all the hardware available ???

What did I have tried ?

I have spent quite a lot of time digging into this and have try the following thing:

• Restart the OS
• Reinstall nvidia driver, lul my GPU still working great with pytorch and keras after many reinstallation
• Delete and download and extract the simulator again (both 3). I also see this same problem on lower setting version of the simulator
• Disconnect external monitor and try to run on a single monitor only
• Go to NVIDIA X Server Setting, try to increase the performance setting of OpenGL and turn off VSync (cause sometime I felt like the simulator is being cap at 30fps). Here are some setting that I have tried, mainly to increase the GPU performance
  
  
• I even went as far as install this game optimizer for linux: https://github.com/FeralInteractive/gamemode

All the things above haven't resolve the issue. At this points, I haven't been able to run the simulator smoothly for the past 2 days.

Soo then, what can I do to potentially fix this problem ? Not buying a new machine or reinstall the whole OS from scratch of course ;(. I guess that there are some saved configuration file that I can delete to make unity reset its setting about my laptop .... but I don't know how to do that ....

Maybe you guys can add Vulkan support for this to make it run faster and more reliable I guess ....

I'm not sure. But I hope that you guys can help me, especially the one who wrote these simulator since this is happening with all of them.

Again, I would do anything to help you guys resolve this problem. Thanks you and looking for yours help soon ;(

[BuiNgocHai]

Hi, I have same problem :( Have any new update for this problem ?