If have applied for a PR Card that is delayed then decide to take the risk of leaving Canada and applying for a PRTD but:
1. you are not visitor visa exempt to facilitate air travel back where you will deal with CBSA on Canadian soil
2. do not have a US Visa to facilitate a land border crossing (subject to CBP granting you admission into the US without any issues)
then you leave yourself at the mercy of the visa post who may rightly or wrongly deny the application especially if your days are borderline (IMHO less than 830 days) and your evidence of 'In Canada days' residence is not conclusive or can be easily rebutted as unreliable and/or not trustworthy.
Remember you start losing days once you leave Canada and your buffer runs out until the PRTD application date in which you better not miss something as the application will be returned as incomplete. Is it really worth the risk?
1. you are not visitor visa exempt to facilitate air travel back where you will deal with CBSA on Canadian soil
2. do not have a US Visa to facilitate a land border crossing (subject to CBP granting you admission into the US without any issues)
then you leave yourself at the mercy of the visa post who may rightly or wrongly deny the application especially if your days are borderline (IMHO less than 830 days) and your evidence of 'In Canada days' residence is not conclusive or can be easily rebutted as unreliable and/or not trustworthy.
Remember you start losing days once you leave Canada and your buffer runs out until the PRTD application date in which you better not miss something as the application will be returned as incomplete. Is it really worth the risk?