Pursuit suspects drive at different speeds every time the game is started.

I have been chasing this issue since 2017. Every time I run the game and engage in pursuits (using pursuit on the fly) all the suspect vehicles will either take off and drive at speeds over 100mph leading to a super fun pursuit, or all suspect vehicles will drive super slow, like 20 mph, incredibly boring. The only way to solve the problem is by restarting the game over and over again, sometimes up to 20 times before the all chases are high speed and the suspect drives well. I'm incredibly tired of starting the game, going on duty, testing the pursuit speeds, exiting the game, restarting etc etc. I only run base lspdfr and I have tried "faster ai drivers 2.2" but it only works when the game runs correctly and that pursuits are already fast. What on earth can this be and can I hire someone to write a script to fix it?