IMO, your visitor visa has no real bearing on the processing of your Outland PR application. But you do need to keep your visitor visa valid - separately from the PR application - but that is only about being able to stay in Canada. Applying Outland while an applicant is in Canada allows the applicant the freedom to return to their home (or go anywhere else) while the application is in process without affecting the progress. If an applicant applies "Inland" and they leave Canada, and are not allowed to re-enter, the Inland application is forfeited.
But if your application is FSW Outland I do not see any issue for you to travel anywhere around the world as long as you are updating your address.
Hope you won't get an interview call. If you do get, at that time, you can ask CIC via email if it is possible for you to conduct the interview in Canada itself.
OR, if you want to be double sure, since you will be doing a long distance travel, suggest you ask this question directly to CIC under general inquiry, right away.
Good Luck.