MSI Mode - which Interrupt Policy and Priority to choose?

[pntn]

Hi, everytime I do a reinstall I'm wondering whether I should just enable MSI and go for default options or change the policy and priority to something else? I'm running a 4080.

 

[W1zzard]

Hi, everytime I do a reinstall I'm wondering whether I should just enable MSI and go for default options or change the policy and priority to something else? I'm running a 4080.

in my opinion no reason to change it unless you're trying to fix a specific issue

 

[pntn]

in my opinion no reason to change it unless you're trying to fix a specific issue

What kind of issue would changing the policy and priority fix? I'm battling stutters in my games that are random, yet frequent and they're there no matter if I turn on MSI mode or not, I tried it with default completely and High priority and default policy, but there was no change. I'm running 13600K.

 

[Chrispy_]

I'm not sure why you're focusing on MSI settings when there are at least a dozen more likely things to cause stutters in games and you've effectively ruled out MSI by trying a bunch of different settings with no effect.

Stuttering in games is usually marginally-unstable RAM or RAM timings, driver issues, monitoring software or tray-utilities that poll the system too aggressively and cause hitches, stale shader cache, throttling CPU, and power delivery issues.

If you fill out your full system specs people can comment on likely candidates but if the issue persists through OS reinstalls you likely have some hardware configuration issue, unless the problem is some software that you always reinstall. Presumably you've ruled this out by testing immediately after the reinstall with the bare-minimum of crap running in the background?

 

[pntn]

You're right, I'm just desperate for solution and I might be looking in the wrong places.

I frankly have no idea what to look into anymore, in the span of 2 years I went from 9900K which it all started with (not right away) to 5600X and back to Intel with 13600K. GPU was 3060Ti and now I'm on 4080. My current build: https://pcpartpicker.com/b/kbCzK8

You have to know that every PC component is new, I completely revamped everything and there's not a single part that I carried over from my old builds, except the AiO cooler and Noctua fans that do the job. The issue still carries over. I made sure that I'm on latest drivers for every component and on paper, this rig should be shredding everything I throw at it, but it still has hiccups. I have a feeling my house is haunted.

 

[chrcoluk]

What kind of issue would changing the policy and priority fix? I'm battling stutters in my games that are random, yet frequent and they're there no matter if I turn on MSI mode or not, I tried it with default completely and High priority and default policy, but there was no change. I'm running 13600K.

IRQ Priority is unlikely to fix that. Leave it on default.

Whats more likely to fix stutters, is cpu affinity and maybe cpu priority, disable core 0.

Some games just stutter no matter what as UE4 isnt very good.

 

[Chrispy_]

You're right, I'm just desperate for solution and I might be looking in the wrong places.

I frankly have no idea what to look into anymore, in the span of 2 years I went from 9900K which it all started with (not right away) to 5600X and back to Intel with 13600K. GPU was 3060Ti and now I'm on 4080. My current build: https://pcpartpicker.com/b/kbCzK8

You have to know that every PC component is new, I completely revamped everything and there's not a single part that I carried over from my old builds, except the AiO cooler and Noctua fans that do the job. The issue still carries over. I made sure that I'm on latest drivers for every component and on paper, this rig should be shredding everything I throw at it, but it still has hiccups. I have a feeling my house is haunted.

(not-so) Dumb question; Have you tried other power sockets and peripherals, tested your PC on a completely different circuit (or even different house) with completely different peripherals yet?

Either you're repeatedly installing a favourite utility on every variant of this system, or something external that you're plugging into it is a more likely cause.

I've had someone declare their PC "haunted" after weeks of back-and-forth troubleshooting. I even replaced the CPU+BOARD+RAM for them on request after telling them that there was nothing wrong with their existing kit. Eventually, the culprit turned out to be a surge-protected outlet in their house. Moving the PC to a different circuit completely solved all the problems.

If you breadboard the system and use a default Windows install with the minimum drivers possible, do you still get the issue? At that point you REALLY want to check the power outlets and peripherals you're using - If a 13600K bare motherboard using IGP and clean/bone-stock install is giving you stuttering then at least you KNOW you need to try a different monitor/keyboard+mouse/power outlet. Once you are stutter-free work up from there ONE component at a time and retest your most repeatably stuttery game each time. If you don't methodically and systematically rule out each piece of hardware and software, you'll likely miss it and end up continuously spending and pulling your hair out unnecessarily!

 

[pntn]

(not-so) Dumb question; Have you tried other power sockets and peripherals, tested your PC on a completely different circuit (or even different house) with completely different peripherals yet?

There's only four peripherals in my PC - keyboard, mouse, audio interface and Topping E30 DAC. I had different mice on rotation, mostly Logitech, I'm not running G Hub, so that excludes mice and its software. The keyboard is a custom one, but it's seen two or three different PCBs and the issue was there all the time, I also had a basic keyboard plugged in while I was working on my custom, it was still there. The audio interfaces I unplugged just to test if these might be the culprit, they weren't, my games were still stuttering. I don't think my peripherals are contributing to this.

My rig is currently plugged into surge protected power strip, plugging PC into an unguarded outlet doesn't change anything, I moved it to the living room to experience the same thing. The only place I didn't try is the kitchen, but it's a solution so far fetched that I'll doubt it will work. I once moved my plagued old rig to my girlfriend's house to play games, but it's been so long ago that I forgot if I was experiencing issues there. It's worth to mention that there's my brother's PC running in the same room and he doesn't really complain about stutters in CS or anywhere, but he might not be as anal about fluidity as I am.

If you breadboard the system and use a default Windows install with the minimum drivers possible, do you still get the issue? At that point you REALLY want to check the power outlets and peripherals you're using - If a 13600K bare motherboard using IGP and clean/bone-stock install is giving you stuttering then at least you KNOW you need to try a different monitor/keyboard+mouse/power outlet. Once you are stutter-free work up from there ONE component at a time and retest your most repeatably stuttery game each time. If you don't methodically and systematically rule out each piece of hardware and software, you'll likely miss it and end up continuously spending and pulling your hair out unnecessarily!

It's already too late for that, haha, it's been plaguing me for 2 years and it's became a hobby of some sorts to try and narrow the issue down. I'm not even sure at this point if it's my machine or games are just designed like this. Might not even be just games, my internet browsing experience, for example on Facebook isn't the most fluid one either, I always get a hitch or two. The stutters aren't systematic, it's dependant on what I do in game, when it comes to Minecraft, I notice spikes whenever I move towards an ungenerated area, that'd seem normal, but there are also stutters when I just move my mouse left or right or when I jump in place, not really looking at generatin Stutters in CS:GO are the most problematic, they truly happen at random. I might be getting a tiny spike in movement on god knows what round, after I've been playing on the map for a few minutes, so there shouldn't be any loading of assets at this point. There are some games that are 99.9% fluid while in game, Apex comes to mind, I rarely get a stutter in it (I still do, but it's actually rare and if all my games behaved like this I wouldn't bat an eye, GTA V in single player is also a contender for an optimized gaming experience, but I noticed rare stutters in there as well). 3DMark shows absolutely no issues: https://www.3dmark.com/spy/36622719 It's just disappointing for me to get defeated by this issue even when I upgraded my entire rig and I tried religiously to make it work and tried most of the solutions.

 

[P4-630]

GTA V in single player is also a contender for an optimized gaming experience, but I noticed rare stutters in there as well

I have average maybe noticed 1 stutter in about two hours of GTA V single player storymode gameplay, with the last nvidia driver (531.18) haven't noticed a stutter yet.

 

[oobymach]

If you're running win 10 and want a fix for the stutter try this:

Search and open Exploit Protection. Set CFG to OFF. Restart.

If you're using msi util v3 to set msi mode on your gpu then yes it will help especially if you have a lot of components (it takes the gpu out of the queue where audio and most devices wait and addresses it directly), I set mine to High interrupt priority and it never gives me issues.