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https://postimg.cc/D89BGwNW I made the updates anyhow, still the same issue Thanks for your help!

I followed all the steps, but cannot see the 'MessageSignaledInterruptProperties folder' for some of them: Here is a list of all the filepaths I got from device manager, and what ones I could change: (PCI) 0x00000020 (32) Nvidia GeForce GTX 1080 Ti...

Here are the screengrabs: https://postimg.cc/gallery/w79BNtm note - there were 511 titled 'Microsoft ACPI Compliant System' so I skipped that whole chunk and sent you only before / after that. It would have been a lot of screengrabs otherwise. youll see what I mean when you look at them...

yep - doing that triggers the symptoms I have previously described

when i boot pc and it is working fine, I run latency Mon = all appears good. I think open device manager and click 'scan for hardware changes' = I watch latency Mon immediately go red: Highest ISR = dxgkrnl.sys Highest DPC = storport.sys

Thanks for all of these pointers. - I manage to figure out how to disable FTPM in bios... still the same! - AMD GPIO Controller 2.2.0.130 - I clicked update driver - it says this is latest one which is odd. I tried googling for 3.0 version, couldnt find it though I dont know what direction to...

updated the samsung firmware via the app. Still the same im afraid. I have found another way to trigger to issue. In device manager when I press the 'Scan for hardware changes' button it causes the stuttering.

well...I spoke too soon still the same. Ill install those updates you mentioned.

Hey, No worries at all - truly appreciate yours and everyone elses help and patience on this so far! I do have an update - I was checking my BIOS version against the latest one - there was an update so I updated it via USB. I dont want to speak too soon, but eveything is a LOT more stable...

I have tried with one graphics card, then another, and then on a different GPU slot on the motherboard....same thing so dont think its the cards.

I just completely reinstalled windows, the problem is till there. I am able to trigger mouse stutter / audio & visual lag by putting the computer to sleep, then waking it up. Does this point to a hardware problem ie - start by removing graphics cards, repeating and seeing if it can be isolated...

...just checked computer again, I thought I would wake it from sleep this time to see if I could trigger the error, and I did, so it is still happening. I just run a latency mon and within seconds got crazy high numbers...

Well, at the moment it hasn’t happened. It is intermittent and normally only when I start the machine for the day. There isn’t anything I know I can do to trigger the lag apart from the above so I just have to wait now I suppose

Thanks for this. Reading now. So if I understand correctly, I should really be uninstalling the 2 x AMD SATA Controller drivers, and keep just the one Standard SATA AHCI Controller one?

I have followed your steps re: what drivers to uninstall. I restarted the pc and checked the driver list again, they reappeared like this: https://postimg.cc/hJ57b7br I juts run latencymon again for 5 mins looks like this now, better right...

my MB is the Aorus X399 Xtreme: https://www.amazon.co.uk/dp/B07GTJ84WQ?ref_=cm_sw_r_apin_dp_33MGA0470XHDYFKCV408 Ill be downloading and sorting out the realtek drivers now - thanks for this

...dropbox is now gone. I ran latencymon again, still high though :( _________________________________________________________________________________________________________ CONCLUSION _________________________________________________________________________________________________________...

Happy to go in and bin these...but what do I do if the computer doesn't reboot? Ill wait and see what you guys think of the above report & system info I just shared above before I do anything else

Hey, Here is the 10min report....it reports high level again: _________________________________________________________________________________________________________ CONCLUSION _________________________________________________________________________________________________________ Your...

Thanks for the tip - I wont pretend to understand exactly what this program does, however I have just run it for about 10 mins and an error has been reported: https://postimg.cc/sMcLYC0c my PSU is...