I am using 2.82, I have linked and made the proxy as shown in the video, however when I go into pose mode there is a severe lag when ever I move the rig. I have tried this in other versions too and I have the same issue. How do I fix this?
Try turning on "Simplify" (to level 0)
Also make sure you are using the 2.8x version. (You probably are but gotta check the simple things)
I turned Simplify to 0, and that worked. Thank you!
