BeamNG Stutter/Frametime Inconsistency

Heyo!

Recently got back into BeamNG after upgrading my pc from 4690k to R5 3600 to check out new updates and test how it runs on new hardware but the suffering seems to continue no matter the upgrade.

I made 3 videos with performance graphs and Afterburner frametime graph at the end to demonstrate this issue (i am also fully aware that for these videos i'm using custom map but this happens regardless of the map and i'm using my phone to film this so that recording software doesn't cause any issues with fps/frametime as well)

Just driving around fast on this specific part of road seems to cause stutters most of the time.


Same road but this time with traffic (limited to 3 cars) which makes the stutters even worse.


And finally driving fast on different part of road without traffic with less stutters.


Specs are fine (R5 3600, 16GB @ 3200mhz, 980 TI running 1080p ultrawide @ 75hz, Beam and Windows on SSD) and as for the usual, not thermal throttling, w10 game mode off, minimal background apps (afterburner, rivatuner and steam only) reinstalled game and Windows multiple times, no known driver issues etc...

Other games that are usually known to be well optimized such as Forza Horizon 4, GTA V, Witcher 3, DOOM run fine with no frametiming/pacing issues.

Is it an issue in BeamNG engine or just my setup? Please help!