I’m just a user of this forum, but this is the 2nd post I know to complain about BT’s performance. This leaves me feeling a bit confused as to whether to use BT of the canvas node or not if the problem is not found.
So I also want to contribute ideas to figure out this problem.
I think you could try opening up BT’s source code and adding ProfilerMarkers deep into the functions called in BT’s Update.