Lag spikes on startup

Hi.
Since yesterday i had a glitch where the game drops to 20 fps on startup. This glitch only occurs on normal version. In truckersmp this doesn't happen and i also don't have any mods enabled.

My system specs are:

AMD Radeon RX 7600

AMD Ryzen 5 5500

My game is installed on a 1TB SSD.

When i look to the task manager in game nothing spikes to 100%. Thats what i find so weird about it
Does someone know a fix to this?