Random low frame rate intervels no matter how much is running

I’ve created threads regarding multiple problems before, but have narrowed it down to just this now, so I thought I would create another. I can share the others and they can be deleted if needed.

I’m still getting nowhere regarding the main issue which are these spikes of low frame rates. Been through every driver version from 450 to 470 and none have made any difference to this problem. I’ve also got a new clean version of Ubuntu 20.04 and tested that and it has exactly the same problem.

At this point, some may suggest it is a hardware issue, but how can that be so intermittent? These periods of what feels like low frame rates occur so randomly, so is surely has to be driver related. Saying that, when I switch to the Nouveau drivers seems to not have the issue. While I can’t play games due to it not using the motherboard graphics as well as it could (still passing through the card), it no longer seems to have the random low FPS issue which can be noticeable when doing things as basic as dragging windows around the screen as they are choppy.
Just to be sure, I used Nouveau for over a week, and other than poor performing games, I never experienced the intermittent issue with any other program. I at one point wondered if it was related to lag from my input devices, as watching videos is perfectly smooth no matter what drivers I use, but watching others play 3D games while I stand still for example, the choppiness is still noticeable. It is just totally random. Sometimes totally smooth, sometimes a few frames per second. And it is exactly the same experience on my desktop with virtually no applications running.

If not using Nvidia drivers can help, surely there is a compatibility problem with my card, Ubuntu and the drivers all the way from 450 to 470. Before I had this issue, I never thought about graphics drivers as everything just worked, including the first month I had my new PC (all the way back in march). I believe it must have had 445 or below back then and it worked fine.

The other bizarre thing that is still the case is plugging another monitor into my graphics card seems to pretty much prevent these odd frame rate drops, but introduces other issues such as tearing. I’ve done a lot of research on this and I just can’t understand why I’m having such issues after having so many driver updates not fixing the problem. Also strange to not read up on anyone having the same experience. The only other possibility (that doesn’t seem realistic) is that this problem started to occur sometime after the first time I had used and them removed a 2nd monitor. I’m not sure if this or the driver update caused it. Surely the latter seems unrealistic though.

I am totally stuck with what to do as unless I find out it is a hardware fault, I can’t just send it back to the retailer that custom built it for me as there may not be any issues. I just don’t know how to find out exactly what they are. I still want to try the 445 drivers or earlier. I’ve tried “sudo apt-get install nvida-driver-445” but don’t seem to be able to fetch them.

If I can confirm that it is the card and software, then I think I will have to accept it and go for AMD instead. But I first need conformation of what the issue is, which I’ve been trying to work out for 5 months.

Have uploaded my latest bug report

nvidia-bug-report.log.gz (294.1 KB)

You do not want to be using motherboard graphics, just plug everything into the dedicated GPU.

If you get tearing issues, open nvidia-settings, then under display configuration click advanced and check force composition pipeline.

If you still get the “random” low FPS, what I would suggest is checking your PSU. If the card is not getting enough power, it will stutter.

Or something in your case is getting really hot.

Will try to reply to each of your lines by what i have tried.

1:
I am aware I won’t want to be using the motherboard graphics, but I am doing so for testing reasons. Is it correct that if I use the Nouveau drivers, and have my monitor connected though the graphics card, is it using the motherboard graphics rather than Nvidia? I did this as I want to confirm if the card can work with the outputs still being used, but not the Nvidia drivers. With Nouveau drivers, while i can’t play any demanding games at all, I never experience the intermittent choppiness of basic things like dragging windows about.

2:
I first wondered what was causing tearing many months ago, and I eventually figured out it was the force composition pipeline boxes in NVIDIA config not being ticked. When using 1 monitor, I never have this problem after I make sure the boxes are ticked. When I connect 2 monitors and have one as a 2nd screen, I don’t seem to be able to remove the tearing, no matter what I do. I don’t want to be using 2 monitors though as I don’t have the space. The most bizzare thing is other than the tearing glitches 2 monitors introduces, it seems to pretty much get rid of these bursts of low frame rate. I just can’t understand this. But this pattern has been the same every time I’ve tried using 2 monitors in the past 5 months I have had this problem.

3:
I would be surprised if it was this unless using the Nouveau drivers uses a lot less power. It can have this problem sometimes with in seconds of logging in and just dragging windows about, and I somehow think the card will be using next to no power at all at this stage. And I can for some reason watch videos without anything ever being choppy. My power supply is the Corsair RM650x and I think it will be capable of delivering more power than I actually need.

4:
I’ve recently been managing my case to check the temperatures and have been adding fans as well as overclocking the graphics card (just fan speed). The maximum temperature I allow it to get to is 75 degrees, which for my model is 13 degrees below critical, so it shouldn’t be an issue. Even when I haven’t been gaming at all all day, the GPU temperature remains below 35 degrees, and the CPU fan is automatically barely spinning and the power supplies metal body feels cool to the touch.

I am trying to confirm weather it is hardware related, or the Nvidia drivers. The most strange thing is that it worked fine for the first few weeks I had the PC.

If I work out it is a hardware fault, I will be able to get back to the retailer that built the PC for me.

If I work out that it is related to the drivers, then there could do with being an update that actually fixes this problem, or a method explained somewhere on how to get older drivers (prior to 450). My really old PC is still on Ubuntu 14.04 and is using 370 drivers or older, and that works fine for what it is capable of with an old GT630.

If I find out that it is certainly an Nvidia related problem that I just can’t find a solution to, I think I will have by an AMD card and to try and sell this card (if I know there is not a hardware issue with it).

Hopefully this explains what I’ve tried so far!

Thanks.