[BUG] Portal Performance Optimisation

[itsonlyjames]

Tried the script referenced here: https://forum.obsidian.md/t/performance-issue-with-canvas-when-panning-out-of-region-with-a-large-number-of-nodes/68609/6, found with portals active it created a jarring flashing effect and made performance worse.

Then tried turning on the performance optimisation within Advanced Canvas, and noticed the same issue. I suspect it's using the same code under the hood.

It's only relatively slow to move around with this below canvas, so it's a non-issue performance wise right now; and I am for sure pushing the limits of maybe what portals are capable of.