Hello,
Tried all these things, but the problem still occurs.
I've made a video where Im driving on a almost empty space of the map, with 2 or 3 people near me. In the video you can see that the lag spikes happen out of nowhere, and that after it the game runs smoothly with 60 FPS again (Shadowplay is limited to 30 FPS). I don't know if the video will help, but I hope it will!
Tried ATSMP aswell, but the game runs just fine there, both SP and MP. My guess is that it has something to do with the servers of MP itself? I remember that I had to update TMP a few days ago, and the problem started around that same time. (I've downloaded the last update again with F1 aswell). The lag spikes are even there whilst im still in the queue. My guess is that it has something to do with the servers, but maybe I'm wrong? (I'm not an expert ). Again, in SP and ATSMP everything works just fine. It's just the ETS2 servers (tried the EU1, 2 and 3 servers, all have the same problem).