I have the same Problem, with 2 different computer (but same addons)
1. Computer with P3D v4,1
CPU i7-7700k oc 4,6 (mult. 46,0 x 100MHz) Noctua NH-D14 cooler (tested with default CPU)
GPU MSI GeForce GTX 1070 Gaming X 8G V330-001R
MotherBoard: MSI H270 Gaming Pro Carbon Intel H270 So.1151 Dual Channel
RAM 16GB Corsair Vengeance LPX schwarz DDR4-3000 DIMM CL15 Dual Kit
PSU Corsair CX750M
SSD 1000GB Samsung 850 Evo 2.5"
2 Computer P3D v4,2
Intel Core i5 8600K 6x 3.70GHz So.1151 TRAY (tested with dafault CPU and with OC 5,2Ghz)
Gigabyte Z370 HD3P Intel Z370 So.1151 Dual Channel DDR4 ATX Retail
16GB G.Skill RipJaws V schwarz DDR4-3200 DIMM CL16 Dual Kit
4000GB WD Red WD40EFRX 64MB 3.5" (8.9cm) SATA 6Gb/s
500GB Samsung 850 Evo 2.5" (6.4cm) SATA 6Gb/s TLC Toggle (MZ-75E500B/EU)
Noctua NH-D15
11GB ZOTAC GeForce GTX 1080 Ti Blower Aktiv PCIe 3.0 x16 (Retail)
Addons:
PMDG 777, 747, 737NGX, FTX Global, Vector, OpenLC Europa, North America, South America, Trees HD
FSDT KLAX, KJFK, CYVR, KBOS FlyTampa, EGLL, EDDM, LFPG, EHAM....
GSX
AS p3d v4 + ASCA
FSUIPC Latest Version
Today CTD 10 mn before LAKES
But usually always over Nova Scotia, Newfoundland and Labrador, on westbound transatlantic flights, never on eastbound
I try tomorrow to fly without coautl.exe