Significant lag when vehicle is on screen

[gs1r]

Minecraft 1.20.1
FVTM 4.20.15

Game loses ~70 fps with complex vehicle like a suburban on screen.
Fps loss with a vehicle like a Plain 1002 is not as bad but still significant performance loss.
Please let me know if you need more information.
Thanks!

Mod list:
FVTM - Fex's Vehicle and Transportation Mod 4.20.15
FCL - Fexcraft Common Library 20.13
GEP - General Essentials Pack 3.1.1
FVP - Fex's Vehicle Pack 3.1.2b
GM Pickup Pack 2.0
Plain Cars Pack 1.1b

latest1.log
debug1.log

[Fexcraft]

Known issue, unclear cause (besides that it's rendering related), 1.20 specific.

Need to find time to look into it.