are you stunned? - No
are you rooted? - No
do you have selos/runspeed? - Yes
are you having mesh issues that is causing you to get stuck? - No
are you getting summoned? - No
are you using disablepullability? - No
what does your gear look like? (i suspect it is rough considering the spells you're missing) - Full T2 EoK, non-vis EoK with a couple TBM. Augs are not great.
are you pulling a mob but getting a ton of mobs? - Seems to be that hes either running up to a mob and dying to it instead of using ranged, or hes following the target around and other mobs are killing him.
are you dying once it comes back to camp? - Rarely, but that is an issue with my tank and I can fix that.
are you dying at the mob? - Yes usually.
those pull settings are terrible.
you should consider taking a look at them.
i imagine you're running past stuff and pulling yourself a train since you are using a 25 zhigh/zlow. which is why you edited your post to say "running through other mobs". use something like 100 or 200 for outside zones (most zones i just use something like 500, but OT you probably dont want that because of the pit.
there is no reason why you need 9999 pull radius
Please see
>>> Getting Started with CWTN plugins! (Movement, UI Window, Clickies, Pulling, ETC) Check Here First! <<<

i mentioned why under certain cirumstances you may end up melee pulling rather than using your pull ability - and it has to do with LoS - eq is terrible with it, and even a smol rock can cause problems - we don't roam around looking for LOS, we nav to the mob and if we find los on the way, we pull.
perhaps try and illusion on your puller and see if that improves your los problems.
you sound pretty confident that you're not getting stunned or rooted when 5 minutes ago you had no idea - are you just blanket saying no because you don't *think* so, or are you checking all of your logs for the "every 5-10 minutes" to see if you were getting stunned or proc'd on or rooted or summoned - because it sounds like you didn't do that.
are these mobs debuffing you by chance?
the mobs in this zone do a non-distance based gore or rend or something on you.

the cactus mobs can stun you (you get swirlys over your head) and they do this:
considering you have 140k hps (then limited futher to 90%), 60k dmg a tick is pretty substantial
if you're not ignoring sarnak traps
again - if you don't know why you're it is going to be very difficult to try and help you figure out why.
a "i went through my damage and it is all just regular melee hits" would be followed up with "ok, so we need to try and address the los issues causing you to run to the mob - which is where i would say try moving areas, or edit your mesh, or use an illusion to make you taller.