So, I've noticed this issue quite recently. Only thing I can really say is that this started with the most recent update (not hotfix). My game's overall performance seems to have dropped significantly, particularly when there are a number of effects on the screen. Also, the game will randomly freeze and I am forced to end the task. My PC doesn't freeze or experience any other issues. RAM useage never reaches more than maybe 60% or so and GPU isn't maxed out. I've tried lowering the v-sync to 46 or so frames (using 144hz monitor). Previous to this update I was running at full settings with no major FPS drop and no freezing. Is there any advice on what can be done to fix this?