Breach Freezing and Delirium Slow

I'm noticing that when I'm in a T16 map, Breach freezes at a certain point and never finishes, and Delirium takes forever to end.

A similar thing happens with Delirium and Abyssal maps. It takes forever to finish. I sit in a completely empty map just waiting.

Also experiencing severe issues when entering Delirium in certain maps and certain map modifiers (chilled ground seems to be a big problem mixing with Delirium for some reason for performance).

This has made juicing with Delirium a complete gamble whether or not the map will be playable thus completely bricking some maps entirely.

I've tried swaping between DX11, Vulcan, various settings and so on, nothing helps.