'same' issue here, always when leaving a track/event(multiplayer and single), and has been present throughout all builds for me including fresh installs. Here 2 event logs of 2 CTDs within half an hour.
Faulting application name: rFactor2.exe, version: 1.7.9.8, time stamp: 0x53cd4ca5
Faulting module name: ntdll.dll, version: 6.1.7601.18247, time stamp: 0x521eaf24
Exception code: 0xc0000005
Fault offset: 0x0000000000053290
Faulting process id: 0xfb4
Faulting application start time: 0x01cfba2ecca26118
Faulting application path: E:\rFactor2\Bin64\rFactor2.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: 0ec825f1-262b-11e4-9c99-d855c2b53417
Faulting application name: rFactor2.exe, version: 1.7.9.8, time stamp: 0x53cd4ca5
Faulting module name: ntdll.dll, version: 6.1.7601.18247, time stamp: 0x521eaf24
Exception code: 0xc0000005
Fault offset: 0x0000000000053290
Faulting process id: 0xa88
Faulting application start time: 0x01cfba380f1e04a8
Faulting application path: E:\rFactor2\Bin64\rFactor2.exe
Faulting module path: C:\Windows\SYSTEM32\ntdll.dll
Report Id: f19ef8be-2630-11e4-9c99-d855c2b53417