Solution for Stutters & Pauses (updated for SU5)

Exact same freezes here.

I had 2 sticks of Gskill F4-3400 Mhz 16GB running at 3200 Mhz with no freezes.
Added 2 sticks of Gskill F4-3600 Mhz 16GB.

All 4 sticks running at 3300 Mhz - No freezes.

All 4 sticks running at 3400 Mhz - random freezes. (in flight and out)

Turned out there was one 16GB stick of memory that was bad.

Edit 2:
I should have noted also that the freezes were only on FS2020.
No freezes on Win 10, Office 365, Chrome (This site and Email).

Strange that this PC will run just fine on memory at 3400 Mhz.
FS2020 will run but has freezes at 3400 Mhz.
FS2020 has no freezes at 3300 Mhz.