Molten Strike + Ancestral Call = Lag

FOUND THE ISSUE
It's related to the glove enchantments. Possible other enchantments too. Someone else on the forum has the same problem with a different glove enchantment.
With enchanted gloves on the game is unplayable, with them off the game is fine.
The enchantment I have is for when I take a critical strike and so shouldn't interact with the molten strike at all.

Hi,
I'm trying to do this Molten Strike build with:
Molten Strike + Multistrike + Ancestral Call + Wildfire gems + probably helmet enchantment later.
I'm up to 15 projectiles per hit, (so 45 per multistrike attack) and the framerate just drops to basically 1 frame every couple of seconds, especially bad if there's anything else on the screen.
I tried lowering the graphics to the lowest possible setting and it makes no difference.
Given that the 15 projectiles could go to 20 or 24 with GMP gem, and I could get much higher attack speed, the problem would get exponentially worse when its already making the game unplayable.
Is this a bug from the latest update, or is this build just unworkable? I would really like to do it.
I have a decent computer, GTX970 etc, good specs.
(Idea - Can the molten strike projectiles be made less graphically intensive when you link them with ancestral call or something?)
Anyway any infromation would be appreciated so I can decide if I should abandon the build or not. Thanks

Still bugged. Glove enchant causes molten strike to lag and desync. I have a different enchant on my gloves as well.

not just enchant i would say.
i have 9 projectile per hit + assassin mark on hit
the game become powerpoint whenever I clear abyssal crack

with 1080ti

Same here. Molten strike is so lag that i got 1fps in lockstep mode while balls hit multiple target. Even predictive mode is unplayable. I jumped in and start to molten strike but only noticing that monster wasn't damaged. Suddenly I realized I was lagging again and jumped out. However I got dragged right back and died. /oos didn't work as well.