4.1 Cannot import files larger than 3 GB

I swear this worked in the previous version, but upgraded to version 4.1 and can no longer import large video files. I record hour-long videos and splice them together using Da Vinci Resolve. I then use VIRB edit to do a GPS overlay.

Last week I tried to import a file over 3 GB and it wouldn't work (though it says it imported successfully). So I used FFMPEG to reduce the bitrate down to small enough that the file was under 3 GB and it was able to import. Any larger and it gives a weird message:



Everything about the files is the same (video encoding, audio encoding, container, etc.), other than the bitrate and file size:


I also used the following to split the video into smaller clips, and it imported! but it ended up as 80+ clips and I couldn't figure out how to align GPS data to all at once.
ffmpeg -i input.mov -c:v copy -c:a aac -f segment -segment_time 60 -reset_timestamps 1 -r 59.94 split/output_%04d.mp4

Is this file size issue a known issue?

Edit:
System Info
Windows 10 Pro (64-bit) (version 1607)
Intel Core i7
File system: NTSF, SSD