sar_startdemos Crashes at Certain Maps

[justaLoli]

if one play a fullgame demo using sar_startdemos from the beginning to end, the game will crash out after nuero sabo (or at the start of core). if one remove some early demo and start from neuro sabo, the game will crash again at the end of finale 3 (or at the start of f4).

this behavior is seen by me and other runners multiple times so i'm sure it's a common issue.

crash report in Portal2/crash_reports/ says:

SAR 1.13.13 (Built 06:46:10 Feb 28 2025)
Segmentation fault caused by address 0x00636974
	(+0x2726f6e0) [0x00636974]
	(+0x0) [0x5672f56b]
	(+0x0) [0x567b37e5]
	(+0x0) [0x567b3bb7]
	(+0x0) [0x568b0963]
	(+0x0) [0x567aab1a]
	(+0x0) [0x5685601c]
	(+0x0) [0x568583f9]
	(+0x0) [0x56858773]
	(+0x0) [0x5686736b]
	(+0x0) [0x568674ba]
	(+0x0) [0x56867554]
	C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2.exe(F+0x568ba00d) [0x568ba00d]
	(+0x0) [0x5291b51d]
	C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2.exe(F+0x568b8df0) [0x568b8df0]
	C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2.exe(F+0x568b8f0f) [0x568b8f0f]
	C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2.exe(F+0x568b995e) [0x568b995e]
	C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2.exe(LauncherMain+0x66df90e0) [0x66df90e0]
	(+0x0) [0x002211dc]
	(+0x0) [0x0022177e]
	C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2.exe(BaseThreadInitThunk+0x76bafcc9) [0x76bafcc9]
	C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2.exe(RtlGetAppContainerNamedObjectPath+0x77c07c6e) [0x77c07c6e]
	C:\Program Files (x86)\Steam\steamapps\common\Portal 2\portal2.exe(RtlGetAppContainerNamedObjectPath+0x77c07c3e) [0x77c07c3e]