Yes, the Canon PowerShot V1 is compatible with the Lexar Professional 2000x 256GB SD.
Canon PowerShot V1's SD slot accepts this card directly. Lexar Professional 2000x 256GB SD is V90 class. Meets the floor for: 4K30 (30 MB/s floor); 4K60 (60 MB/s floor). (Peak write 260 MB/s is not evidence of sustained performance; the V90 class rating above decides this.)
“4K (cropped) 59.94 50.00 IPB (Standard) UHS Speed Class 3 or higher Video Speed Class V60 or higher”
Last verified:
Compatibility inferred from spec rule (citations above are manufacturer-verified)