No, nothing changed at the hardware level.
I searched for Citrix issues and there are some reports that Citrix fucks up Unity games. I also saw reports that DX11 mode in FF14 is a 2fps shitshow with Citrix installed since October (while having 150+ FPS in dx9 mode)
I deinstalled Citrix and restarted the PC but sadly it didn't change anything. But couldn't test it more because I need Citrix tomorrow for work.
checking the nvidia overlay, the 1660 is used as the display but not really working
the performance overlay when I tested the problem with Rimworld tells me:
gpu clock 300 mhz
GPU temp 44C
GPU voltage 0,6volt
GPU usage 10-20%
GPU power 15 watts
GPU fan speed 0 RPM
memory clock 405mhz
I could confirm this issue with Wasteland 3, Xcom2 and Rimworld
CK3 and Factorio are fine, they both use the GPU fully and the temps go above 60C and mostly stable 60 fps