Your combination of camera and strobes cannot go above 1/160s shutter speed sync; no cable will help you, it just can't be done, the camera shutter blades don't move fast enough. If you upgrade your camera body to a Sony A1, you'll get access to 1/400s flash sync speed, and 1/500s in APS-C sync mode, but that's $6500 just for a body. If you change your strobes to Retras, you'll be able to utilize high-speed sync, but that's $1000/strobe for Prime model and $1100/strobe for Pro. If you downgrade to a compact such as a Sony RX100 series, you'll be able to sync at any shutter speed all the way to 1/4000s, but then you'll also need wet lenses.
Note that if you're using manual power on the strobes and fill-in flash mode on the camera, the mode knob on the strobes must be set to the twin lightning bolts position so that they will ignore the pre-flash; this will also introduce a bit of shutter lag. If you're using WL mode on the camera, then you have to put the mode knob in the single lightning bolt position, or the strobes will not fire.
In general, I have not found the 1/160s flash sync speed limit on my A6300 to be a significant limitation - the only situation in which it really comes into play is shooting directly into the sun, like this:
...and even here, f/22, 1/160s, ISO 100 and full power on the strobes allowed me to light a large-ish sea fan while keeping the sunball under control.
Normally, when shooting wide-angle, I use shutter speeds in the 1/80-1/125 range in order to keep the blue water background reasonably bright.
