i think it’s related to pitool updating plus using openxr toolkit, i assume you are using that? openxr toolkit + some versions of pitool produce these broken vertical black lines in the hmd. you have to use a different version of pitool, or use pimax client, or fix the pitool version u have with a hex editor (the instructions for this are on the openmr forums), or stop using openxr toolkit. i fixed my pitool.