How many camera we can view in 1 workstation

We have 2 workstation and 8 LED display and 128 total camera.

both workstation have 4gb nvidia with 4 dp ports, i7 processor, 64gb ram and all 8 display connected with 2 workstation.

when we view live camera our live video jump, freeze for 4-5 second and recording also skipped for 2-3 second.

Please suggest solutions and recommend how many camera we can view in each workstations.