Confirmed Pet Melee Lag

Any word on if that 11/28 update or the Direct X 11 changes will remedy this issue?

It's definitely not related to direct X.

Reading the last 2 pages I understand 2 different point of views.
Regarding the groupgame is it still true, to avoid any kind of spells/proccs if you want your pet to maximize dps?
So best to not use weapons which procc and don't buff your pet with anything that may cause proccs?

Yes. Proccing buffs and weapons on your pet decrease dps in basically all normal situations.
Its kinda sad that all those mage summoned weapons are strictly bad to use (excepting agro swords if you need them).

Hi. Pet class newbie here.

Mage weapons > no weapons?
Or is it still advantageous to equip pets with clubs and other mundane items?

Just throwing a Shower Thoughts (tm) idea out there...

Until this is actually completely addressed, is it possible to have the Spell Hold feature apply to procs from weapons and buffs (and procs from swarm pets) instead of just the pet cast spell? That seems like it would make for an easy enough interim solution while Dev continues to explore the underlying cause.

(And no, this post will never, ever die until this is resolved.)

Assuming your are over lvl 50, the times when you would use a weapon are:
1. water pet. Give it summoned daggers that do not proc. That will allow it to backstab from the front and sides
2. If you need agro weapons

There is the ice buff that procs a run on your pet. That one is used for defensive reasons. However ones that are purely damage make your pet miss swings and decrease damage

No one knows yet if its a bug or a feature/fix but it sounds like pets are currently not proccing weapons at all on test anymore.

What are the odds, that we may see a fix, before the 5th anniversary of the first post of this thread has passed?

There will most likely never be a single fix for this, but a series of continuous improvements.