Performance issues during Jamanra fight only

Had some major performance issues when fighting Jamanra, my FPS kept decreasing as the fight went on all the way down to 30 fps. Usually I can get 120 fps no problem

I may have solved this by deleting the shader cache and increasing the shade cache size limit

Just had the same issue.

7800x3d/4060/32gb all uptodate.

I play at 4k60 (with dlss) no problem but it randomly dropped to around 30fps in the area you help Asala open gates (fixed by restarting game) and then again in 2nd phase of this boss fight on the dreadnought.