I forgot to add that ESO reported latency at around 150 ms at last glance before I logged out just now, and it was occurring again. No latency spikes reported in-game.

Hmm, I don't run any software to track cpu usage over time. Does anyone have something they could suggest to test that theory? There'd be a lot of 100% spikes, I'd imagine, if that were the case. Or some other way to detect it.

So, my sister supposedly had luck by switching between all her characters. I tried that, discovered that things are worse in busy areas like Glenumbra/Daggerfall, but it still impacts less busy areas like Bangkorai/Evermore (where I usually park) and Veteran areas. But ultimately that tactic did not work for me.

It feels almost like bad packet handling somehow, with how jerky things are going. I'm definitely not getting any frame lag, but I have noticed that the times where this control lag occurs, certain other oddities occur as well. For example, someone who was on horseback I saw as standing ramrod straight and zipping along in that position until the game "caught up" and loaded the info that they were on a horse, the horse animation, etc.

Maybe it's server CPU overload or server connection/router issues? I really don't know enough about big game architecture to make much of an educated guess...

To quickly add stuff tried from the linked post: Reloading the UI does not help. Neither does disabling keyboard/mouse profiling software.

Apparently, for me the solution was a simple reboot. Usually I do that nightly, but I'd had run where I hadn't. I was able to play this evening with no issues.

For my sister, unfortunately, that did not work. She's still getting the issue, and can still seem to "solve" it temporarily by switching to various characters in her list until the problem goes away. At least until she gets the inevitable "endless loading" screen and has to force-close, then the process begins again.

Very odd.

I have narrowed the problem down to a combination of Video Settings and control input hang-ups, possibly a resource utilization problem.

A few things observed while testing....

The primary observations remain intact:
- Keyboard + Mouse = unpredictable lengths where I lose control (no loss to FPS, everything is smooth), and when I regain control the input sends all of the pending data at once (usually resulting in a sudden jerk of the camera rotation).
- Autorun + Mouse does NOT result in this issue.
- This issue began with the latest patch (July 20, 2015).

Other discoveries:
- Changing my Video Preset from Ultra High to Medium, then changing the video settings to where they were before (without changing the preset) caused this issue to hit frequently/for short periods, even though there was no actual change to my settings.
- On my sister's computer, changing the Video Preset between Medium and Low and then returning the video settings to their Medium sets (again without changing the preset) resulted in muddy graphics. Changing the Preset back to Medium (with the video settings already at Medium settings) restored it.
- Thus: Changing your Video presets changes some hidden quality setting the user does not have access to OR the Video presets are erroneously changing a setting and not informing the user.
- Setting my sister's Video Preset to Minimum and Low eliminated the issue. She began to experience it again once the Preset was set to Medium.
- Most notably the Texture Quality, Subsampling Quality, and Shadow Quality in various combinations seem to trigger the issue more reliably (but also cause the most muddy visuals).
- Possible resource utilization issue? Dirty code committed regarding visuals?

Old discoveries:
- My sister is able to temporarily "treat" the issue by cycling through her characters until the problem goes away. It usually takes her about 8 character loads before she's good. This solution does not work for me.
- I am able to temporarily "treat" the issue more often than not by rebooting. The issue becomes degeneratively worse over time, sometimes within 12 hours, sometimes over a span of days. This solution does not work for my sister.

Untested info:
- Saw mention of a "shaders.cooked" file. Not sure if this is a cache that purging might help fix.
- Not sure if there are any other caches that could be purged to test to see if a re-cache might fix.

@Trowsers, were you able to mitigate the issue using autorun + mouse to move?

The patch for Aug 03, 2015 did not fix this issue for me.

Keyboard: Corsair K95 RGB
Mouse: Logitech G700s
Operating System: Windows 7 Pro
Architecture: 64-bit
Graphic Quality (Preset): Ultra High
Graphic Quality (Settings): High, High, Ultra, Medium, 1024, 50, 100; On, On, On, On, On, On, On.
GPU: NVIDIA GeForce GTX 750 Ti
GPU Manufacturer/Model: EVGA 02G-P4-3757-KR - 2 GB 128-Bit GDDR5
Graphics Driver: 353.62 (Latest - Jul 29, 2015)
RAM: 8 GB

Minor test update:
- Impacts any keypress. Autorun + other keys (Shift, Space, E, etc) were triggering the issue.
- Fullscreen video (as opposed to Windowed Fullscreen) did not fix the problem, sadly. (Nice idea on a friend's part though.)

(Copied post from another thread -- in case Google search lands you here instead of there.)

Support suggested I uninstall my virus scanner (Avast) entirely and test again -- obviously not a permanent solution, but intended for testing only since a PC should not go unprotected.

On my sister's computer, so far, uninstalling and reinstalling Avast seems to have done the trick SO FAR. Two important notes:
1.) We need a longer test duration to ensure the problem is solved for her. At least 4 days, if not a week or more.
2.) When installing Avast, do a CUSTOM INSTALLATION and REMOVE the bloat. In her case, I only installed shields, browser protection, browser cleanup, home network security, and secure virtual machines.

On my computer, the solution was hit-and-miss. I ran into a hitch after a reinstall, but no further hitches after a second uninstall/reinstall cycle (on the second cycle, I removed Secure Virtual Machines from Avast).

Could we get some data from those suffering this issue on whether they are running Avast, or what antivirus they are running if they aren't? Also, could you try uninstalling your anti-virus, testing ESO, then reinstalling your anti-virus and testing ESO again, posting the results of each test? Consider a full and/or boot-time virus/malware scan to ensure your computer is clean before uninstalling, just to be safe.

You may also wish to document what features of your anti-virus you installed, if it has a list of options, so we can compare notes across varying machines.

Just ran into the issue again. I'm uninstalling Avast and switching to Panda to see if that helps. So far, my sister hasn't reported any issues playing with Panda installed.

Not exactly happy about that... as annoying as Avast's popup adverts were, it's been solid protection for years.

@Angelisaur, what anti-virus software do you use?

@Anglisaur Yeah, the last session I had with Avast, I was just fine for most of the time, then just out of the blue started getting the issue again. That kinda tore it for me, and I switched anti-viruses.

Does it update virus definitions while expired? If not, I'm not sure I would trust it -- outdated antivirus can be at least as bad as no antivirus, since it gives a false sense of security. But I'm not familiar with that particular security app, so only you can really judge whether it'd be worth it to do a test-uninstall with the intention on switching to a different app if you find that was the source of the issue.

Alternatively, you could pay them for another year and have the leisure of uninstalling/reinstalling freely... but if it turns out it was the source of the problem, then you'll have burned the cash.

I have only been experiencing this problem since the latest patch, so posted it in thread http://forums.elderscrollsonline.com/en/discussion/212064/known-issues-for-patch-v2-1-4-imperial-city/p4 (post #120) before I found this thread. If you don't mind I'd like to turn the focus of this thread back to gathering our specs to look into this annoying problem, as asked by ZOS:

ZOS_GinaBruno wrote: »

Hey guys! In order to help us troubleshoot the issue, we'd ask those that are experiencing this issue to answer the following questions:

• UtechSmart Venus 50 to 16400 DPI High Precision Laser MMO Gaming Mouse for PC
• Windows 7
• 64bit
• Mix of high and ultra (i.e. the settings recommended by Nvidia GeForce Experience)
• GeForce GTX 560 Ti
• 16 Gb

Note: I'm also running Avast and no I'm not going to uninstall it, even for testing purposes. I've been running Avast for years and I'm paying good money for it to run on my 3 computers. So if one game doesn't run properly because of Avast, it's the game that will sadly need to go, not my antivirus. Also, I have been playing ESO for a month now so why would Avast only start bugging ESO for the past few days?

Also note: in other threads about the exact same problem or about very similar problems, people come up with all kinds of completely different solutions e.g. run ESO in admin mode (can't do that, launcher won't start when I set it to run as admin, it's the Steam version of ESO btw). This is to say that it's easy to think a solution has been found for one or two people. If someone farts and ESO runs smoothly after that, he'll go advising everyone to fart while playing ESO. Sigh.

An update. Other people talk about the same issue in the following two threads, but for them it also seems to have begun with the IC patch, whereas this thread was started before that patch:

1) http://forums.elderscrollsonline.com/en-GB/discussion/comment/2226704/#Comment_2226704

Posts #153 and #156.

2) http://forums.elderscrollsonline.com/de/discussion/213280/look-speed-slower-while-sprinting/p1