Hello
For the moment I did not get real performances improvements with V6 compared to V5.4 : On my computer V 6.0 without any addon is slower than V 5.4 full of Orbx, Next Mesh and France VFR ORVFR... True on 1980x1020 screen or in VR / Oculus Quest 2 with official Link cable. (My computer : W11 Hexacore i7 8700 K 3.7 GHz / 32 Go RAM 2400 MHz, GPU 1070 Ti 8 Go RAM, Driver Nvidia 536.40). Both 6.0 and 5.4 installed on same SSD internal NVMe drive
Only improvements on my computer seem to be PBR textures rendering, basic Mesh (really don't mind as third party Mesh will certainly work in V6.0 and I have a lot of very good ones) and update procedure (if working as announced)
So for me no reason to try to install Orbx or any addon using "tricks" if actually using V5.4 : worth to wait for V 6.0 official Orbx Central support and for some other V6.0 bugs to be fixed (night lighting; C130 not displayed, texture bugs on some airports...)