Face to Face intepreters are always ideal because the intepreter can visibly see in real time if the Deaf person is understanding the message and clarify any questions they have about the response. The face to face interpreter can insure line of sight and lighting that are sufficient for the Deaf person.  Video Remote Interpreters (the laptop intepreter) are a wonderful resource for those in rural communities where there are few or no interpreters, and driving distance is prohibitive to providing a face to face interpreter.  The chief complaint I hear from Deaf people is that the WiFi is unreliable and the itnepreter freezes up. Next , the intepreter is hard to see, or doesn't understand them and it's hard to interject to clarify.
With that said, if a face to face interpreter can't be arranged, a Video Remote interpreter may be an option. The final decision should be left to the Deaf person you are  serving. Video Remote Interpreters are NEVER a good option for a person who identifies as Deaf/Blind