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RTX 3090 stutter and bizarre fix (DASHOST.exe, android TV)

Mussels

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Yeah, you're looking at the thread title and you're confused.

TL;DR: To save effort and sanity, disabling "remote startup" on my ethernet connected android TV (Sony KD55) stopped my RTX 3090 stuttering and lagging in Ghost recon breakpoint about once a minute, and if i dont post this now in a few years time when DASHOST.exe stabs me again after a firmware update on the TV or something, i'd never EVER remember what the hell happened.
I suspect this may only be so severe for (Sony?) Android smart TV's on ETHERNET, to Nvidia windows users possibly only in OpenGL and Vulkan games. At least one user said it happened on an Amazon Firestick

What threw me off entirely in all my testing, is that for two weeks my son was home in a Covid related lockdown, so the goddamned TV was turned on 99% of the time... so if it was on for a few hours, i'd think that i'd found the fix only for it to come back later.


The offending Sony UHDTV:
1631833439586.png


The incredibly similar, yet problem free TCL UHDTV: Note that it has TWO options, for wifi and wired
1631833495835.png

I have three 4K Android TV's (Different brands, same OS) and a Google Chromecast with remote (which runs the same OS) - only the sony on ethernet has shown this issue. They are all fine on Wifi.

The symptoms: my PC would stutter in-game, and i'd see GPU usage drop, and have my usual 100+ FPS drop to as low as 5, then bounce back. This could happen once a minute, or 30 times in a row.
For future records, this is a top tier system in 2021, Age of Covid, Era of cloth facemasks, when everyones friggin stuck indoors.
Custom water cooled RTX 3090 24GB, Ryzen R7 5800x, 64GB DDR4 and a 2TB WD SN850 NVME SSD (the fastest in the world, at the time of purchase)

Usually timing matched up with contents being loaded from the SSD, but that was a red herring - it's an open world, always online game so its ALWAYS reading from the SSD.
Eventually i realised i could just load a game alone, sit in the menu after loading into the world (which DOES pause the game) and the stutter *still happened* and could be easily noticed in MSI afterburners power graph for the GPU.
That meant it was not in fact a loading issue, and something else...

Everything i tested to fix this:
OS reinstall
new OS
New drivers
Absolute hardware teardown and rebuilds, NVME SSD thermal pads VRM, VRAM thermal pads... everything. EVERY. SINGLE. THING.
Disabling IPv6
Changing DNS servers
reinstalling/downloading the game
every combination of Vsync and Gsync known to man, and some i sacrificed innnocent children to linux to learn about
About 300,000 combinations of GPU, VRAM and TDP settings in various overclocking programs
Locking CPU to various clock speed settings, power plans, PBO profiles, etc
Changing Mobo BIOS and GPU VBIOS many times
Changing BIOS settings for PCI-E gen, Resizeable BAR
Disabling hardwdare devices (sound, network, etc)
More. So much more. It's been a month of hatred and loathing.

What i could not try: Gaming offline, as the game boots you out

What i did try... running off my phones wifi hotspot... stutter free!
This is when i realised it was a network issue, and went down the following network related paths:

As i use a google nest mesh wifi network, i tried all its unique settings such as "gaming priority" and such first, then disabling IPv6, changing various DNS servers, all sorts of shenanigans.
Just once... ONCE did i happen to be watching resource monitor on my second monitor and saw DASHOST.exe, and spent about 20 minutes figuring out what IP address it was getting pinged from, as it was a local network device and my son was in bed asleep...

And it was my Sony android TV (which BTW, has has major firmware updates in 2021, this isn't an old outdated model)

Searching for DASHOST and Sony, finally saved my sanity: Reddit had a hit
TRUE STORY - Sony Android TV caused VR framerate stutters on my Oculus Rift S in Dirt Rally 2.0! : oculus (reddit.com)

1631801515993.png

In that thread, they linked to the guy who originally found it on ANOTHER game, in 2018!
TWO THOUSAND EIGHTEEN. THREE YEAR OLD BUG. ARRRGH.

[INVESTIGATING]Spike lag caused by internet network, now what? - Game Performance Bugs - ED Forums (eagle.ru)
1631801359734.png


Why i got slapped in the bum-bum with this crap:
Two weeks ago i had a Lady Friend come over, and we watched Deadpool in 4K on Disney+ and it stuttered on wifi despite netflix having no issues, so i plugged it into ethernet and never thought about it again. Because my son was at home in Covid lockdown closing his school for those two weeks, the TV was on a lot of the time... not lagging me. The moment he moved over to the TV in his room, or went to bed... well.
Women and kids cause lag.[/spoiler]
 
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Great post, great info. I'm glad you got it sorted.
 

Mussels

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I feel like i was having a stroke, finally figuring it out.
Every false positive along the way was because my son was home from school for 2 weeks due to a covid lockdown, if he was using the TV? no lag...

updated with some more details, and photos of two TV's with the same OS but different 'remote start' settings

Anyone know how to use wireshark?

Theres weird stuff in the capture (192.168.2.4 is the offending sony TV, with the remote start feature turned on)

1631834839299.png


1631841518585.png




I believe it's related to how windows pops up devices on the network here:
1631834483409.png


I was seeing device manager 'flicker' like it was scanning for new devices but couldnt find anything there, being a network attached device would be why
 

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Mussels

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Have you considered to split your networks into various subnets... like nacho network for spammy devices, google home, mobile phones, TV's(a nice name ain't it) and have a priority main network where your PC and NAS resides.
 

Mussels

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Have you considered to split your networks into various subnets... like nacho network for spammy devices, google home, mobile phones, TV's(a nice name ain't it) and have a priority main network where your PC and NAS resides.
well i would have kept these devices connected anyway, as i stream content from this PC to the UHDTV's/chromecasts regularly
 
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well i would have kept these devices connected anyway, as i stream content from this PC to the UHDTV's/chromecasts regularly

Unusual setup. Most do HDMI to receiver and the chromecast stuff is left for mobile devices ie same nacho network.
 

Mussels

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Unusual setup. Most do HDMI to receiver and the chromecast stuff is left for mobile devices ie same nacho network.
My kid dont need a HTPC to watch thomas the tank engine seasons they cut off from aussie netflix, and he sure aint using plex to do it
 
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My kid dont need a HTPC to watch thomas the tank engine seasons they cut off from aussie netflix, and he sure aint using plex to do it

Modern problems... When I was a kid I watched Alien and Predator on VHS.... kinda survived.
 

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I feel like i was having a stroke, finally figuring it out.
Every false positive along the way was because my son was home from school for 2 weeks due to a covid lockdown, if he was using the TV? no lag...

updated with some more details, and photos of two TV's with the same OS but different 'remote start' settings

Anyone know how to use wireshark?

Theres weird stuff in the capture (192.168.2.4 is the offending sony TV, with the remote start feature turned on)

View attachment 217185

View attachment 217213



I believe it's related to how windows pops up devices on the network here:
View attachment 217183

I was seeing device manager 'flicker' like it was scanning for new devices but couldnt find anything there, being a network attached device would be why
Ack Sony. I remember their tvs hdmi ports not being properly grounded and pushing stray voltages to Uverse/Xfinity TV boxes and knocking services out
 
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