Blight Maps, Lag-Screenflickering - solving proposal

I like doing Blight-Maps because i love the TowerDefense mechanic.
But the sad truth is, it is nearly unplayable at some points.

The problem beginns when you stun/freeze/petrify an enemy that has a Proximity-Shield.

As soon as one (yes it only needs one) of these enemy's is "stuck" the whole lane backs up
to one massive traffic jam on one singular spot, causing Lag and Screen flickering.

This is because the Proximity-Shield enemy's are affected by Chilling/Petrifying Beams,
but not by Hits of Damaging Towers.

Please fix Blight-Maps by disabling, that enemy's which have a Proximity-Shield, can spawn.

I believe, that Blight-Maps would be fixed with just this change.

Have a nice Day

I'm not sure if this is exactly the issue, but I can't do blight ravaged maps because the graphics start to flicker, then the UI disappears. You can't upgrade any towers, and while you can pause the menu doesn't appear. Eventually it will kick you to the login screen.

I'm happy to provide settings and spec for my computer if this problem isn't widespread.