This one?
Im looking at this one and will let you know how it goes:
I am concerned that Pimax uses DP v1.4 however all extension cables are v1.2 so potentially could be losing fidelity here, but not sure 100% what signal the Pimax sends/requires. I mean Pimax themselves could be sending a v1.2 worthy amount of bandwidth in which case the v1.2 cable is fine. Given it worked for Sweviver on a cheap eBay cable, ill give it a shot and let you know.