Framerate drop and performance hit after doing a portal scan (2.123.1)

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I'm noticing an issue where the framerate drops considerably and the game starts to respond in a sluggish manner after I complete a single portal scan. It seems to correct itself if I toggle the Native Refresh Rate setting or restart the scanner. This began with the latest update which introduced Lightship AR scanning and the new visual effects.
App version: 2.123.1
Device: Pixel 7
OS: Android 13
4
Comments
Can confirm on 2.123.2 as well, using Oneplus 8 Pro on Android 13.
Disabling and instantly reenableing the "Unlock Frame Rate" option fixes the FPS until the next scan.
I thought it was just a thing that was happening me, for no explicable reason.
I do notice that the file size drops after the initial scan when viewed in the settings screen. And I presumed it was just the post scan ML compression.
Sounds like a memory overflow issue or something ? Game bugs out after too much memory allocated or something