the only available fiber optic thunderbolt cables I'm aware of right now are from corning, and they are thunderbolt 3. I'm running 5120x1440@120hz through it (a

the only available fiber optic thunderbolt cables I'm aware of right now are from corning, and they are thunderbolt 3. I'm running 5120x1440@120hz through it (and a variety of USB); 4k144hz would be about 35% more bandwidth. Corning lists the cable as supporting 2x4k or 1x5k (presumably both at 60hz); 5k is the same bandwidth as mine, and 2x4k is some what more but less than 4k144hz. Total bandwidth on the cable is 40g and bandwidth needed for 4k144hz is about 32g I believe. can't guarantee it'd work, but 4k120hz probably does?