Please optimise the game graphics properly

I'm experiencing serious drops in performance and often crashes since patch 3.24. I need to specify that my computer is not the youngest one but still - I7 processor, 32 GB RAM, GF RTX 2060 should be plenty of resources for POE1 to thrive. Meanwhile the game runs at 45-50 frames and drops to 25-30 in action. That wouldn't be the problem but there are times it drops to about 5 frames. And if don't teleport away from the action the game crashes!
There are several instances when it occurs:
1. In breach fortresses while defending Alith.
2. In rituals - especially 3rd and 4th phase.
3. In any encounter whit monsters after claiming that Kalguran ore that causes tornadoes to manifest.
What happened since 3.24 patch? Is the game compiled without any optimisation or what? And I know what I'm saying because ritual used to be my favourite mechanic. I used to kill so many monsters and trigger so many effects that the screen became one huge blur.
Look - I know that the game is evolving and in time it will need more resources but something went horribly wrong here. Same content, same PC setup, performed clean install of windows, set the game to lowest specs and somehow I'm getting worse experience than lets say a year or two ago.
Please GGG fix this before the game become completely unplayable!

What CPU do you have? Saying you have an I7 doesn't tell us much as every generation has the I7 (mid-tier) version. I assume it's at least 8k or 9k series?