SOURCE

I was wrong about it being called 'Physical Impulse', according to IWS it only effects dead people.

He goes on to say: SOURCE

Is being rooted just the one of the Sprint Bugs / Terrain Glitches acting up? If it is it has been getting a lot worse. Not sure what to make of it, I am quite sure that I have been rooted while I was sprintingGǪ

Origin:
The specific origin of what we call "Stun Lock" is unclear; an increased frequency has been observed since December of 2013; hence primary suspect, 1.7 Patch Note: "Physical Impact", be it related or not.

Frequency:
The affect is regularly observed, though not consistently. Odds of replication can be heavily influenced.

Replication:
The HMG induces this affect at greatest frequency, the burst-fire Combat Rifle at second greatest frequency. Biotic Scouts are at highest risk of impact. Wearing Armor Plates decreases odds of replication. Stacking KinCats increases odds of replication.

The HMG is definitely the worst offender, even when I had a tanked cal assault it felt like I hit molasses when they shot me. Please fix!

Point of clarification.

I was under the impression that "stun lock" was different from the "sprint bug".

The "stun lock" being described well in your OP.

The "sprint bug" often being referred to a circumstance in which switching or using weapons (I can't remember the specifics) while sprinting creates a slow down of the merc in question after the sprint, which is often fixed by crouching, and reportedly meleeing, the latter of which I have found ineffective. As far as I can see this itself does not have anything to do with being fired upon.

Of course I could be misreading things, as I do frequently.

RE: Stun lock. It has to go!!!

No lab environments yet?

Well the few clues posted so far will be useful.

@ IWS
Tell us what you'd like to see, and we'll perform the experiment. The bug is easy enough to replicate, but it is more felt than seen, so I'm not sure how clearly it'd present via screen capture. I was kinda hoping QA would "feel" it for themselves, but we're glad to help in any way we can.

@ Brothers
Any ideas on how we might "prove" or demonstrate this one?

Well we have our clues; it seems speed based and certain weapons have a high proc. the problem is the test subjects are... paper thin.

Things I would like to know is there a point in the damage input the slowdown occurs?
Video evidence would go eons in figuring it out.
Testing with to figure out which has the highest proc rate then finding weapons that have any sort of proc rate.

Test parameters:

Make a point a to b probably two road cones.

Get a scout fit that is decent health and speed you think can help trigger the effect? this is likely going to be the caldari suit based on the clues given so far.

Have him start the run before the first cone and don't have him stop after he passes the second cone. Time only the start and end of the cone.

Once you get the unadulterated average speed. Then include weapons fire at the middle point. prefire a bit and fire enough to break shields and then cease fire. Observe the times if they're any different.

Its not hard to replicate, it happens every time you get shot.

Usually I die too fast while it happens, with only having about 220 ehp.

The time I noticed it the longest was while a heavy was hitting me with an HMG at a distance, and I was trying to round a corner to get away. I lasted longer because not all his shots hit me, but every step or two one would, and it was like I hit a wall.

Maybe it would be easiest to replicate with a low dps weapon, a heavy or sentinal, and some kincats for speed? That way the tester would live long enough to show the reduced speed, and the original speed would be high enough to notice a reduction.

Just my .02 isk.

If you want to do it with a quickish suit with a large HP pool maybe try a dual kincat minmando? Or hybrid tank a gal scout with armor and kincats. This would give you enough HP and decent speed to really see a difference in run times if tested like IWS suggested.

Well we have our clues; it seems speed based and certain weapons have a high proc. the problem is the test subjects are... paper thin.

Things I would like to know is there a point in the damage input the slowdown occurs?
Video evidence would go eons in figuring it out.
Testing with to figure out which has the highest proc rate then finding weapons that have any sort of proc rate.

Test parameters:

Make a point a to b probably two road cones.

Get a scout fit that is decent health and speed you think can help trigger the effect? this is likely going to be the caldari suit based on the clues given so far.

Have him start the run before the first cone and don't have him stop after he passes the second cone. Time only the start and end of the cone.

Once you get the unadulterated average speed. Then include weapons fire at the middle point. prefire a bit and fire enough to break shields and then cease fire. Observe the times if they're any different.

[HMG Heavies] you have to run when they see you and get too close, but you can't run, no, you slow down to crawl speed as you try to escape

Running away from the HMG is like in those horror films when you see a girl slowly crawling away and suddenly being pulled back to her death.

As an HMG user I can agree that the quicksand is very bad news for medium suits, probably to the point of being over done.

All you have to do is use the search function
https://forums.dust514.com/default.aspx?g=search&search=Patch+Notes&forumID=728&devbadge=1

Tonight we test? Usual time? between 1 and 3? Feeding of **** will have to wait until we are finished.