Hi guys,
i had the same problem with texture loss. Sometimes it quite start at the beginning of the patrol, sometimes after a few callouts.
What i am thinking is, that the texture loss is a combination from lspdfr 0.4/4.1, plugins and a number of modded cars. At this time lspdfr takes more resources from your system as 0.3 version.
With just a clean gta and lspdfr install i have no texture loss but sometimes frame drops in the northern region (Sandy Shores, Paleto).
So i think we have to wait until there is an update for lspdfr or/and ragehook.
Greetings!